John Elmerdahl Olsen

John Elmerdahl Olsen

Professor

Member of:

    ORCID: 0000-0001-6225-6587

    Publication year:
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    1 - 100 out of 489Page size: 100
    1. 1985
    2. Published

      On the reduction of Mycobacterium paratuberculosis in bovine slurry subjected to batch mesophilic or thermophilic anaerobic digestion

      Olsen, John Elmerdahl & Nansen, P., 1985, In: Agricultural Wastes. 13, 4, p. 273-280 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    3. 1987
    4. Published

      Bacterial decimation times in anaerobic digestions of animal slurries

      Olsen, John Elmerdahl, 1987, In: Biological Wastes. 21, 3, p. 153-168 16 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    5. Published

      Inactivation of some parasites by anaerobic digestion of cattle slurry

      Olsen, John Elmerdahl & Nansen, P., 1987, In: Biological Wastes. 22, 2, p. 107-114 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    6. 1988
    7. Published

      Studies on the reduction of pathogenic and indicator bacteria in liquid pig manure treated by sedimentation and anaerobic filter digestion for methane generation

      Olsen, John Elmerdahl, 1988, In: Biological Wastes. 24, 1, p. 17-26 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    8. 1990
    9. Published

      Restriction fragment length polymorphism of the Vibrio anguillarum serovar 01 virulence plasmid

      Olsen, John Elmerdahl, 1990, In: Applied and Environmental Microbiology. 56, 10, p. 3130-3132 3 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    10. Published

      The prevalance of plasmids in Danish bovine and human isolates of Salmonella dublin

      Olsen, John Elmerdahl, 1990, In: APMIS. 98, 8, p. 735-740 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    11. Published

      An improved method for rapid isolation of plasmid DNA from wild‐type Gram‐negative bacteria for plasmid restriction profile analysis

      Olsen, John Elmerdahl, May 1990, In: Letters in Applied Microbiology. 10, 5, p. 209-212 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    12. Published

      Infectivity of Eggs of Taenia taeniaeformis after Anerobic Digestion of Sewage Sludge – A Possible Model for Taenia saginata Egg Resistance

      Olsen, John Elmerdahl & Nansen, P., Sep 1990, In: Acta Veterinaria Scandinavica. 31, 3, p. 377-379 3 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    13. 1991
    14. Published

      Isolation of a Salmonella-specific DNA hybridization probe

      Olsen, John Elmerdahl, 1991, In: APMIS. 99, 2, p. 114-120 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    15. Published

      Listeria monocytogenes Isolates can be classified into two major types assording to the sequence of the listeriolysin gene.

      Rasmussen, O. F., Beck, T., Olsen, John Elmerdahl, Dons, L. & Rossen, L., 1991, In: Infection and Immunity. 1991, p. 3945 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    16. Published

      Listeria monocytogenes isolates can be classified into two major types according to the sequence of the listeriolysin gene

      Olsen, John Elmerdahl, Dons, L. & Rossen, L., 1991, In: Infection and Immunity. 59, 11, p. 3945-3951 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    17. Published

      Occurrence of plasmids in Danish isolates of Vibrio anguillarum serovars O1 and O2 and association of plasmids with phenotypic characteristics

      Olsen, John Elmerdahl, 1991, In: Applied and Environmental Microbiology. 57, 8, p. 2158-2163 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    18. Published

      Plasmid profiles of Salmonella enterica serovar berta isolated from broilers in Denmark

      Bisgaard, M. & Olsen, John Elmerdahl, Jul 1991, In: APMIS. 99, 7-12, p. 609-614 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    19. Published

      Prevalence of antibiotic‐resistant Escherichia coli in Danish pigs and cattle

      Aalbæk, Bent & Olsen, John Elmerdahl, Jul 1991, In: APMIS. 99, 7-12, p. 1103-1110 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    20. Published

      A rapid polymerase chain reaction (PCR)-based assay for the identification of Listeria monocytogenes in food samples

      Rossen, L., Holmstrøm, K. & Olsen, John Elmerdahl, Nov 1991, In: International Journal of Food Microbiology. 14, 2, p. 145-151 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    21. 1992
    22. Published

      Cloning and characteriza

      Dons, L. E., Rasmussen, O. F. & Olsen, John Elmerdahl, 1992, In: Molecular Microbiology. (1992) 6 (20), p. 2919 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    23. Published

      Salmonella enterica: Infection, Cross Infection and Persistence within the Environment of a Broiler Parent Stock Unit in Denmark

      Brown, D. J., Olsen, John Elmerdahl & Bisgaard, M., 1992, In: Zentralblatt fur Bakteriologie. 277, 1, p. 129-138 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    24. Published

      Plasmid profiles as an epidemiological marker in Salmonella enterica serovar berta infections: Comparison of isolates obtained from humans and poultry

      Olsen, John Elmerdahl, BROWN, D. J., GAARSLEV, K. & BISGAARD, M., Jan 1992, In: APMIS. 100, 1-6, p. 221-228 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    25. Published

      Biochemical and molecular characterization of Salmonella enterica serovar berta, and comparison of methods for typing

      Olsen, John Elmerdahl & Bisgaard, M., Apr 1992, In: Epidemiology and Infection. 108, 2, p. 243-260 18 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    26. Published

      Evaluation of a Salmonella‐specific DNA probe by colony hybridization using non‐isotopic and isotopic labeling

      AABO, S., THOMAS, A., HALL, M. L. M., SMITH, H. R. & Olsen, John Elmerdahl, Jul 1992, In: APMIS. 100, 7-12, p. 623-628 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    27. Published

      Characterization of Salmonella Enterica Serovar Gallinarum Biovars Gallinarum and Pullorum By Plasmid Profiling and Biochemical Analysis

      Christensen, Jens Peter, Olsen, John Elmerdahl, Hansen, H. C. & Bisgaard, M., 1 Sep 1992, In: Avian Pathology. 21, 3, p. 461-470 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    28. Published

      Cloning and characterization of a gene encoding flagellin of Listeria monocytogenes

      Dons, L. & Olsen, John Elmerdahl, Oct 1992, In: Molecular Microbiology. 6, 20, p. 2919-2929 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    29. Published

      Plasmid profiles and phage types of Salmonella typhimurium isolated from successive flocks of chickens on three parent stock farms

      Baggesen, D. L., Olsen, John Elmerdahl & Bisgaard, M., 1 Dec 1992, In: Avian Pathology. 21, 4, p. 569-579 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    30. 1993
    31. Published

      Ribotypes and plasmid contents of Vibrio anguillarum strains in relation to serovar

      Olsen, John Elmerdahl & Larsen, J. L., 1993, In: Applied and Environmental Microbiology. 59, 11, p. 3863-3870 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    32. Published

      Salmonella identification by the polymerase chain reaction

      Aabo, S., Rasmussen, O. F., Roseen, L., Sørensen, P. D. & Olsen, John Elmerdahl, Jun 1993, In: Molecular and Cellular Probes. 7, 3, p. 171-178 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    33. Published

      Bacterial typing methods suitable for epidemiological analysis. Applications in investigations of salmonellosis among livestock.

      Olsen, John Elmerdahl, Brown, D. J., Skov, M. N. & Christensen, Jens Peter, Dec 1993, In: The Veterinary quarterly. 15, 4, p. 125-135 11 p.

      Research output: Contribution to journal › Review › Research › peer-review

    34. Published

      Ribotypes of Salmonella enterica serovar Gallinarum biovars gallinarum and pullorum

      Christensen, Jens Peter, Olsen, John Elmerdahl & Bisgaard, M., 1 Dec 1993, In: Avian Pathology. 22, 4, p. 725-738 14 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    35. 1994
    36. Published

      Characterization of two putative Listeria monocytogenes encoding polypeptides homologous to the sensor protein CheA and the responce regulator CheY of chemotoxis

      Dons, L. E., Olsen, John Elmerdahl & Rasmussen, O. F., 1994, In: The jounr. of Seguencing and Mapping. 4, p. 301 12 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    37. Published

      Characterization of two putative listeria monocytogenes genes encoding polypeptides homologous to the sensor protein chea and the response regulator chey of chemotaxis

      Dons, L., Olsen, John Elmerdahl & Rasmussen, O. F., 1994, In: DNA Sequence. 4, 5, p. 301-311 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    38. Published

      Clonal lines of Salmonella enterica serotype Enteritidis documented by IS200-, ribo-, pulsed-field gel electrophoresis and RFLP typing

      Olsen, John Elmerdahl, Skov, M. N., Threlfall, E. J. & Brown, D. J., 1994, In: Journal of Medical Microbiology. 40, 1, p. 15-22 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    39. Published

      Ribotyping of Aeromonas salmonicida subsp. salmonicida

      Nielsen, B., Olsen, John Elmerdahl & Larsen, J. L., 1994, In: Diseases of Aquatic Organisms. 18, 2, p. 155-158 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    40. Published

      Specific detection of pathogenic yersinia enterocolitica by two-step pcr using hot-start and dmso

      Rasmussen, H. N., Rasmussen, O. F., Andersen, J. K. & Olsen, John Elmerdahl, Apr 1994, In: Molecular and Cellular Probes. 8, 2, p. 99-108 10 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    41. Published

      Genomic lineage of Salmonella enterica serovar Dublin

      Olsen, John Elmerdahl & Skov, M., Jun 1994, In: Veterinary Microbiology. 40, 3-4, p. 271-282 12 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    42. Published

      Stability of plasmids in five strains of Salmonella maintained in stab culture at different temperatures

      Olsen, John Elmerdahl, Brown, D. J., Baggesen, D. L. & Bisgaard, M., Aug 1994, In: Journal of Applied Bacteriology. 77, 2, p. 155-159 5 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    43. Published

      RAPD analysis of Yersinia enterocolitica

      Rasmussen, H. N., Olsen, John Elmerdahl & Rasmussen, O. F., Nov 1994, In: Letters in Applied Microbiology. 19, 5, p. 359-362 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    44. 1995
    45. Published

      Abstract i forbindelse med præsentation af poster til: Avancerede målesystemer og databehandling til proces- og produktudvikling, 1995, KVL

      Christensen, Henrik & Olsen, John Elmerdahl, 1995

      Research output: Other contribution › Communication

    46. Published

      Antibiotikumresistente Escherichia coli i tarmfloraen hos danske svin og kalve i perioden 1970-1988

      Aalbæk, Bent, Olsen, John Elmerdahl, Nielsen, B., Larsen, J. L., Sørensen, M., Errebo Larsen, H. & Rasmussen, J., 1995, In: Dansk Veterinærtidsskrift. 78, 20, p. 1026-1029 4 p.

      Research output: Contribution to journal › Journal article › Research

    47. Published

      Characterization of non-virulence plasmids with homology to the virulence plasmid of Salmonella dublin

      Aabo, S., Olsen, John Elmerdahl, Threlfall, E. J. & Brown, D. J., 1995, In: Research in Microbiology. 146, p. 751-759 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    48. Published

      DNA-probes and PCR for identification of Salmonella

      Olsen, John Elmerdahl, Aabo, S. & Rossen, L., 1995, Southeast Asian journal of tropical medicine and public health. 26 ed. p. 222-224 3 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    49. Detection of Yersinia enterocolitica O:3 in faecal samples and tonsil swabs from pigs using IMS and PCR

      Rasmussen, H. N., Rasmussen, O. F., Christensen, Henrik & Olsen, John Elmerdahl, 1995, In: Journal of Applied Bacteriology. 78, 5, p. 563-8

      Research output: Contribution to journal › Journal article › Research › peer-review

    50. Published

      Immune reaction of pigs following intra-gastric or ileal inoculation of attenuated Salmonella typhi

      Loftager, M. K., Olsen, John Elmerdahl & Eriksen, L., 1995, In: Advances in Experimental Medicine and Biology. 371, B, p. 913-917 5 p.

      Research output: Contribution to journal › Conference article › Research › peer-review

    51. Published

      Listeria monocytogenes exists in at least three evolutionary lines: Evidence from flagellin, invasive associated protein and listeriolysin O genes

      Rasmussen, O. F., Skouboe, P., Dons, L., Rosen, L. & Olsen, John Elmerdahl, 1995, In: Microbiology. 141, 9, p. 2053-2061 9 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    52. Published

      Molecular methods for control of sources and routes of microbial infections

      Olsen, John Elmerdahl, 1995, Meat quality and safety as affected by primary production. Møller, A. J., Mielche, M. M. & Barton-Gade, P. (eds.). p. 174-184 11 p.

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

    53. Published

      Prevalence of Salmonella in dry pelleted chicken manure samples obtained from shrimp farms in a major shrimp production area in Thailand

      Dalsgaard, Anders & Olsen, John Elmerdahl, 1995, In: Suisanzoshoku. 136, p. 291-295 5 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    54. Published

      RFLP variation in Salmonella gallinarum virulence plasmids and the effect on virulence

      Christensen, Jens Peter, Barrow, A. P., Olsen, John Elmerdahl, Brown, D. J. & Bisgaard, M., 1995, Southeast Asian journal of tropical medicine and public health. 26 ed. p. 160-162 3 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    55. Published

      The ¤development of oligonucleotide probes and PCR methods specific for Salmonella or for S. serotype typhimurium and application to detection in naturally contaminated samples

      Olsen, John Elmerdahl, Aabo, S. & Rossen, L., 1995, Southeast Asian journal of tropical medicine and public health. 26 ed. p. 92-98 7 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    56. Published

      Oligonucleotide probes specific for the genus Salmonella and for Salm. typhimurium

      Olsen, John Elmerdahl, Aabo, S., Rasmussen, O. F. & Rossen, L., Mar 1995, In: Letters in Applied Microbiology. 20, 3, p. 160-163 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    57. Published

      Research note: Detection of Salmonella in minced meat by the polymerase chain reaction method

      Aabo, S., Andersen, J. K. & Olsen, John Elmerdahl, Sep 1995, In: Letters in Applied Microbiology. 21, 3, p. 180-182 3 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    58. Published

      Probes and polymerase chain reaction for detection of food-borne bacterial pathogens

      Olsen, John Elmerdahl, Aabo, S., Hill, W., Notermans, S., Wernars, K., Granum, P. E., Popovic, T., Rasmussen, H. N. & Olsvik, Nov 1995, In: International Journal of Food Microbiology. 28, 1, p. 1-78 78 p.

      Research output: Contribution to journal › Review › Research › peer-review

    59. 1996
    60. Published

      Correlation between viable counts of Salmonella Gallinarum in spleen and liver and the development of anaemia in chickens as seen in experimental fowl typhoid

      Christensen, Jens Peter, Barrow, P. A., Olsen, John Elmerdahl, Dirch Poulsen, J. S. & Bisgaard, M., 1996, In: Avian Pathology. 25, p. 769-783 15 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    61. Published

      Detection of Campylobacter jejuni and Camp. coli in chicken faecal samples by PCR

      Rasmussen, H. N., Olsen, John Elmerdahl, Jørgensen, K. & Rasmussen, O. F., 1996, In: Letters in Applied Microbiology. 23, p. 363-366 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    62. Published

      Distribution and antibiotic resistance patterns of common mastitis pathogens (gram-positive cocci) in selected dairy herds of three dairy farming sectors in Zimbabwe

      Makaya, P. V., Aarestrup, F. M. & Olsen, John Elmerdahl, 1996, In: Zimbabwe Veterinary Journal. 27, 2, p. 65-75 11 p.

      Research output: Contribution to journal › Journal article › Research

    63. Published

      Five-hydroxytryptamine receptor antagonist reduces salmonella-induced net fluid accumulation in porcine small intestine

      Hansen, M. B., Grøndahl, M. L., Jensen, G. M., Nielsen, C., Olsen, John Elmerdahl & Skadhauge, E., 1996. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

    64. Published

      Genomic lineage of Salmonella enterica serotype Gallinarum

      Olsen, John Elmerdahl, Skov, M. N., Christensen, Jens Peter & Bisgaard, M., 1996, In: Journal of Medical Microbiology. 45, p. 413-418 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    65. Published

      Metoder til eftersporing af patogene bakteriers smitte gennem levnedsmidler: eksemplificeret ved slagtekyllingeproduktion

      Olsen, John Elmerdahl, Brown, D. J. & Bisgaard, M., 1996. 1 p.

      Research output: Contribution to conference › Poster › Research

    66. Published

      Polyphasic characterization of organisms within the [Pasteurella] haemolytica complex

      Angen, Ø., Caugant, D. A., Olsen, John Elmerdahl & Bisgaard, M., 1996. 1 p.

      Research output: Contribution to conference › Paper › Research

    67. Published

      Påvisning af salmonella populationer udfra ribosomale DNA sekvenser

      Christensen, Henrik & Olsen, John Elmerdahl, 1996. 1 p.

      Research output: Contribution to conference › Poster › Research

    68. Published

      Relation between subspecies of Salmonella enterica by 23S rDNA sequence comparison

      Christensen, Henrik & Olsen, John Elmerdahl, 1996. 1 p.

      Research output: Contribution to conference › Poster › Research

    69. Published

      Sequence diversity of the flagellin gene of Listeria monocytogenes

      Dons, L., Rasmussen, O. F. & Olsen, John Elmerdahl, 1996. 3 p.

      Research output: Contribution to conference › Paper › Research

    70. Published

      The ¤application of PCR to the meat industry

      Olsen, John Elmerdahl, 1996.

      Research output: Contribution to conference › Paper › Research

    71. Published

      The ¤development and application of oligo nucleotide probes and PCR methods specific for the genus Salmonella and for S. Typhimurium

      Olsen, John Elmerdahl, Aabo, S. & Rossen, L., 1996. 1 p.

      Research output: Contribution to conference › Conference abstract for conference › Research

    72. Published

      The ¤development of oligonucleotide probes and PCR methods specific for Salmonella or for Salmonella typhimurium and application to detection in naturally contaminated samples

      Olsen, John Elmerdahl, 1996.

      Research output: Contribution to conference › Paper › Research

    73. Published

      Virulence and genotype stability of Salmonella enterica serovar Berta during a natural outbreak

      Olsen, John Elmerdahl, Skov, M. N., Brown, D. J., Christensen, Jens Peter & Bisgaard, M., 1996, In: Epidemiology and Infection. 116, p. 267-274 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    74. Published

      Øvelsesvejledning til kursus i Klinisk Mikrobiologi

      Olsen, John Elmerdahl, Aalbæk, Bent & Brown, D. J., 1996

      Research output: Book/Report › Compendium/lecture notes › Education

    75. 1997
    76. Published

      A ¤typing concept for Salmonella

      Olsen, John Elmerdahl, Lau Baggesen, D., Christensen, Henrik & Platt, D. J., 1997. 1 p.

      Research output: Contribution to conference › Paper › Research

    77. Published

      Antibiotikaresistens: er det gammel vin på nye flasker?

      Nielsen, B., Olsen, John Elmerdahl & Aarestrup, F. M., 1997, In: Veterinærinformation. 1, p. 3-10 8 p.

      Research output: Contribution to journal › Journal article › Communication

    78. Published

      Antibiotikaresistente bakterier i det akvatiske miljø

      Petersen, A., Olsen, John Elmerdahl & Dalsgaard, Anders, 1997, In: Dansk Veterinærtidsskrift. 80, 16, p. 700-704 5 p.

      Research output: Contribution to journal › Journal article › Research

    79. Published

      Anvendelse af ITS (internal transcribed spacer) fragmentlængde polymorfi til typning indenfor Salmonella og Campylobacter

      Christensen, Henrik, Jørgensen, K., Lange Møller, P. & Olsen, John Elmerdahl, 1997, Ikke angivet. Levnedsmiddelcentret, p. 187 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    80. Published

      DNA-diagnostik i relation til levnedsmiddelmikrobiologi

      Olsen, John Elmerdahl, 1997, Ikke angivet. Levnedsmiddelcentret, p. 55 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    81. Published

      Differences detected in the expression of Salmonella plasmid virulence (spv) genes in different serotypes of Salmonella enterica by the use of an spvB-cat fusion reporter gene

      Brown, D. J., Chadfield, M. S. & Olsen, John Elmerdahl, 1997. 1 p.

      Research output: Contribution to conference › Paper › Research

    82. Published

      Differentiation of Shewanella putrefaciens and Shewanella alga on the basis of whole-cell protein profiles, rybotyping, phenotypic characterization, and 16S rRNA gene sequence analysis

      Vogel, B. F., Jørgensen, K., Christensen, Henrik, Olsen, John Elmerdahl & Gram, L., 1997, In: Applied and Environmental Microbiology. 63, 6, p. 2189-2199 11 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    83. Published

      Effect of indomethacin on Salmonalla typhimurium and cholera toxin-induced fluid accumulation in pig jejunum

      Unmack, M. A., Grøndahl, M. L., Olsen, John Elmerdahl, Skadhauge, E. & Berner Hansen, M., 1997. 3 p.

      Research output: Contribution to conference › Paper › Research

    84. Published

      Effect of ondansetron on Salmonella typhimurium-induced net fluid accumulation in the pig jejunum in vivo

      Majgaard Jensen, G., Grøndahl, M. L., Grøndahl Nielsen, C., Skadhauge, E., Olsen, John Elmerdahl & Berner Hansen, M., 1997, In: Comparative Biochemistry and Physiology - Part A: Comparative Physiology. 118, 2, p. 297-299 3 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    85. Published

      Forekomst af antibiotikaresistente bakterier i akvatiske miljøer: litteraturstudium

      Petersen, A., Olsen, John Elmerdahl & Dalsgaard, Anders, 1997, København: Frontlinien, Miljøministeriet. 60 p. (Miljøprojekt; No. nr. 361).

      Research output: Book/Report › Book › Education

    86. Published

      Further studies of the relationships among strains classified as taxon 15, taxon 18, taxon 20, (Pasteurella) granulomatis or the (Pasteurella) haemolytica-complex in ruminants using quantitative evaluation of phenotypic data

      Angen, Ø., Olsen, John Elmerdahl & Bisgaard, M., 1997, In: Zentralblatt für Bakteriologie. 286, p. 317-332 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    87. Published

      Genomic relationships between selected phage types of Salmonella enterica subsp. enterica serotype typhimurium defined by ribotyping, IS200 typing and PFGE

      Olsen, John Elmerdahl, Skov, M. N., Angen, Ø., Threlfall, E. J. & Bisgaard, M., 1997, In: Microbiology. 143, p. 1471-1479 9 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    88. Published

      Genotypic relationships among strains classified under the (Pasteurella) haemolytica-complex as indicated by ribotyping and multilocus enzyme electrophoresis

      Angen, Ø., Caugant, D. A., Olsen, John Elmerdahl & Bisgaard, M., 1997, In: Zentralblatt für Bakteriologie. 286, p. 333-354 22 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    89. Published

      Hatchery-borne Salmonella enterica serovar Tennessee infections in broilers

      Christensen, Jens Peter, Brown, D. J., Madsen, M., Olsen, John Elmerdahl & Bisgaard, M., 1997, In: Avian Pathology. 26, p. 155-168 14 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    90. Published

      Molecular typing of Salmonella: an overview

      Olsen, John Elmerdahl, 1997. 1 p.

      Research output: Contribution to conference › Paper › Research

    91. Published

      Phylogenetic relations of Salmonella established by 23S rRNA gene sequence comparison

      Christensen, Henrik, Nordentoft, S. & Olsen, John Elmerdahl, 1997. 6 p.

      Research output: Contribution to conference › Paper › Research

    92. Published

      Relationships among strains classified with the ruminant Pasteurella haemolytica-complex using quantitative evaluation of phenotypic data

      Angen, Ø., Aalbæk, Bent, Falsen, E., Olsen, John Elmerdahl & Bisgaard, M., 1997, In: Zentralblatt für Bakteriologie. 285, p. 459-479 21 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    93. Published

      Risk factors associated with Salmonella enterica serovar typhimurium infection in Danish broiler flocks

      Skov, M. N., Angen, Ø., Chriél, M., Olsen, John Elmerdahl & Bisgaard, M., 1997, Proceedings. p. 343-346 4 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    94. Published

      Salmonella plasmid virulence (spv) gene expression in different serotypes of Salmonella enterica measured by the use of spvB fusion reporter genes

      Brown, D. J., Chadfield, M. S. & Olsen, John Elmerdahl, 1997. 3 p.

      Research output: Contribution to conference › Paper › Research

    95. Published

      Secretory pathways in Salmonella Typhimurium-induced fluid accumulation in the porcine small intestine

      Grøndahl, M. L., Majgaard Jensen, G., Nielsen, C. G., Skadhauge, E., Olsen, John Elmerdahl & Berner Hansen, M., 1997, In: Journal of Medical Microbiology. 46, p. 1-7 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    96. Published

      The ¤application of polymerase chain reaction to the meat industry

      Olsen, John Elmerdahl, Boel, J. & Aabo, S., 1997, Factors effecting the microbial quality of meat. Hinton, M. H. & Rowlings, C. (eds.). University of Bristol Press, Vol. 4. p. 135-141 7 p. (Microbial methods for the meat industry).

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

    97. Published

      The ¤characterization of a naturally occurring RFLP variant of the Salmonella enterica serovar gallinarum biovar gallinarum virulence plasmid associated with reduced virulence in chickens

      Christensen, Jens Peter, Barrow, P. A., Olsen, John Elmerdahl, Brown, D. J. & Bisgaard, M., 1997. 2 p.

      Research output: Contribution to conference › Paper › Research

    98. 1998
    99. Published

      A ¤typing concept for Salmonella

      Olsen, John Elmerdahl, Lau Baggesen, D., Christensen, Henrik & Platt, D. J., 1998, EUR. Aspán, A. & Mulder, R. W. A. W. (eds.). 18209 ed. Publications Office, p. 97-103 7 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    100. Published

      Antibiotic resistance in Acinetobacter spp. isolated from sewers receiving waste effluent from a hospital and a pharmaceutical plant

      Guardabassi, Luca, Petersen, A., Olsen, John Elmerdahl & Dalsgaard, Anders, 1998, In: Applied and Environmental Microbiology. 64, 9, p. 3499-3502 4 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    101. Published

      Antimicrobial resistance mechanism: entering the post-antimicrobial era?

      Olsen, John Elmerdahl, Chriél, M., Aalbæk, Bent & Dietz, Hans Henrik, 1998. 5 p.

      Research output: Contribution to conference › Paper › Research

    102. Published

      Diversity of lactic acid bacteria isolated from traditional Malaysian foods

      Leisner, Jørgen, Christensen, Henrik, Olsen, John Elmerdahl, Pot, B., Rusul, G., Wee, B. W., Muhamad, K. & Ghazali, H. M., 1998. 1 p.

      Research output: Contribution to conference › Paper › Research

    103. Published

      Phylogenetic relationships of Salmonella based on DNA sequence comparison of atpD encoding the beta subunit of ATP synthase

      Christensen, Henrik & Olsen, John Elmerdahl, 1998, In: FEMS Microbiology Letters. 161, p. 89-96 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    104. Published

      Phylogenetic relationships of Salmonella based on rRNA sequences

      Christensen, Henrik, Nordentoft, S. & Olsen, John Elmerdahl, 1998, In: International Journal of Systematic and Evolutionary Microbiology. 48, p. 605-610 6 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    105. Published

      Scavenging local chickens in Tanzania: is there room for improvement in productivity?

      Msoffe, P. L. M., Mtambo, M. M. A., Minga, U. M., Gwakisa, P. S., Katule, A. M., Mutayoba, S., Mdegela, R. H., Mwalusanya, N. A., Yongolo, M. G. S. & Olsen, John Elmerdahl, 1998, In: Tanzanian Veterinary Journal. 18, 4, p. 117-126 10 p.

      Research output: Contribution to journal › Journal article › Research

    106. Published

      Secretory pathways in Salmonella typhimurium-induced fluid accumulation in the porcine small intestine

      Grøndahl, M. L., Majgaard Jensen, G., Nielsen, C. G., Skadhauge, E., Olsen, John Elmerdahl & Berner Hansen, M., 1998, In: Journal of Medical Microbiology. 47, p. 151-157 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    107. Published

      Tracing of pathogenic bacteria

      Olsen, John Elmerdahl, 1998, Ikke angivet. Svarre, M. (ed.). Levnedsmiddelcentret, p. 33 1 p.

      Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

    108. Published

      Veterinærstuderende gennem 25 år

      Olsen, John Elmerdahl, Flagstad, A. & Hobolt, K., 1998, Veterinærskolen 225 år : rids af de seneste års udvikling. Lefmann, G. & Katic, I. (eds.). København: Jordbrugsforlaget, p. 67-76 10 p.

      Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

    109. 1999
    110. Published

      Antibiotic resistance: genetic mechanisms and mobility

      Olsen, John Elmerdahl, 1999, In: Acta Veterinaria Scandinavica (Print Edition). 92, p. 15-22 8 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    111. Published

      Anvendelse af antibiotika i landbruget: betydning for udvikling af antibiotikaresistente bakterier

      Olsen, John Elmerdahl & Aarestrup, F. M., 1999, In: Miljoesk. 16, p. 16-23 8 p.

      Research output: Contribution to journal › Journal article › Communication

    112. Published

      Differentiation of Campylobacter coli and C. jejuni by length and DNA sequence of the 16S-23S rRNA internal spacer region

      Christensen, Henrik, Jørgensen, K. & Olsen, John Elmerdahl, 1999, In: Microbiology. 145, p. 99-105 7 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    113. Published

      Host specificity of Salmonella serotypes

      Olsen, John Elmerdahl & Chadfield, M., 1999. 1 p.

      Research output: Contribution to conference › Paper › Research

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