R L Walker

Summary

Affiliation: University of California
Country: USA

Publications

  1. ncbi request reprint Comparison of VIDAS enzyme-linked fluorescent immunoassay using Moore swab sampling and conventional culture method for Salmonella detection in bulk tank milk and in-line milk filters in California dairies
    R L Walker
    California Animal Health and Food Safety Laboratory, School of Veterinary Medicine, University of California, Davis 95616, USA
    Int J Food Microbiol 67:123-9. 2001
  2. pmc Equine abortion associated with the Borrelia parkeri-B. turicatae tick-borne relapsing fever spirochete group
    R L Walker
    California Animal Health and Food Safety Laboratory Davis Branch, School of Veterinary Medicine, University of California, Davis, California 95616, USA
    J Clin Microbiol 40:1558-62. 2002
  3. ncbi request reprint An improved molecular assay for Tritrichomonas foetus
    R A Grahn
    Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, 1 Shields Avenue, Davis, CA 95616, USA
    Vet Parasitol 127:33-41. 2005
  4. ncbi request reprint Farm- and host-level risk factors for papillomatous digital dermatitis in Chilean dairy cattle
    A Rodriguez-Lainz
    Department of Medicine and Epidemiology, University of California, Davis 95616, USA
    Prev Vet Med 42:87-97. 1999
  5. ncbi request reprint Aeromonas species associated with necrotizing enteritis and septicemia in an adult male ostrich (Struthio camelus)
    M Franca
    California Animal Health and Food Safety Laboratory System, Fresno Branch, University of California, Davis, 2789 S Orange Avenue, Fresno, CA 93725, USA
    Avian Dis 53:310-6. 2009
  6. doi request reprint Short communication: Attempts to identify Clostridium botulinum toxin in milk from three experimentally intoxicated Holstein cows
    R B Moeller
    California Animal Health and Food Safety Laboratory, University of California, Tulare 93274, USA
    J Dairy Sci 92:2529-33. 2009
  7. ncbi request reprint Histochemical and immunohistochemical evidence of a bacterium associated with lesions of epizootic bovine abortion
    M L Anderson
    California Animal Health and Food Safety Laboratory, University of California, Davis 95616, USA
    J Vet Diagn Invest 18:76-80. 2006
  8. ncbi request reprint Spatial and temporal clustering of Salmonella serotypes isolated from adult diarrheic dairy cattle in California
    K Sato
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    J Vet Diagn Invest 13:206-12. 2001
  9. doi request reprint Cutaneous pythiosis in a nestling white-faced ibis
    P A Pesavento
    Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California at Davis, Davis, CA 95616 5270, USA
    Vet Pathol 45:538-41. 2008
  10. ncbi request reprint Comparison of the 5.8S rRNA gene and internal transcribed spacer regions of trichomonadid protozoa recovered from the bovine preputial cavity
    R L Walker
    California Animal Health and Food Safety Laboratory, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    J Vet Diagn Invest 15:14-20. 2003

Collaborators

Detail Information

Publications17

  1. ncbi request reprint Comparison of VIDAS enzyme-linked fluorescent immunoassay using Moore swab sampling and conventional culture method for Salmonella detection in bulk tank milk and in-line milk filters in California dairies
    R L Walker
    California Animal Health and Food Safety Laboratory, School of Veterinary Medicine, University of California, Davis 95616, USA
    Int J Food Microbiol 67:123-9. 2001
    ....
  2. pmc Equine abortion associated with the Borrelia parkeri-B. turicatae tick-borne relapsing fever spirochete group
    R L Walker
    California Animal Health and Food Safety Laboratory Davis Branch, School of Veterinary Medicine, University of California, Davis, California 95616, USA
    J Clin Microbiol 40:1558-62. 2002
    ..turicatae tick-borne relapsing fever spirochete group with a late-term abortion in a mare are described...
  3. ncbi request reprint An improved molecular assay for Tritrichomonas foetus
    R A Grahn
    Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, 1 Shields Avenue, Davis, CA 95616, USA
    Vet Parasitol 127:33-41. 2005
    ..Moreover, electrophoretic separation of amplified samples can be outsourced, thus eliminating the need for diagnostic laboratories to purchase expensive analysis equipment...
  4. ncbi request reprint Farm- and host-level risk factors for papillomatous digital dermatitis in Chilean dairy cattle
    A Rodriguez-Lainz
    Department of Medicine and Epidemiology, University of California, Davis 95616, USA
    Prev Vet Med 42:87-97. 1999
    ..A policy of trimming all cows' vs. only lame cows' feet and a policy about buying adult cows did not have significant effects on PDD risk...
  5. ncbi request reprint Aeromonas species associated with necrotizing enteritis and septicemia in an adult male ostrich (Struthio camelus)
    M Franca
    California Animal Health and Food Safety Laboratory System, Fresno Branch, University of California, Davis, 2789 S Orange Avenue, Fresno, CA 93725, USA
    Avian Dis 53:310-6. 2009
    ..from various tissues strongly suggest that this bacterium was the cause of the necrotizing enteritis, septicemia, and death of this ostrich. Vitamin A deficiency might have predisposed the bird to the Aeromonas infection...
  6. doi request reprint Short communication: Attempts to identify Clostridium botulinum toxin in milk from three experimentally intoxicated Holstein cows
    R B Moeller
    California Animal Health and Food Safety Laboratory, University of California, Tulare 93274, USA
    J Dairy Sci 92:2529-33. 2009
    ..From these results, it appears that Clostridium botulinum type C toxin does not cross from the blood to the milk in detectable concentrations...
  7. ncbi request reprint Histochemical and immunohistochemical evidence of a bacterium associated with lesions of epizootic bovine abortion
    M L Anderson
    California Animal Health and Food Safety Laboratory, University of California, Davis 95616, USA
    J Vet Diagn Invest 18:76-80. 2006
    ..To the authors' knowledge, this is the first report to document morphologic evidence of a bacterium associated with the lesions of EBA...
  8. ncbi request reprint Spatial and temporal clustering of Salmonella serotypes isolated from adult diarrheic dairy cattle in California
    K Sato
    Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616, USA
    J Vet Diagn Invest 13:206-12. 2001
    ..Knowledge of the specific type of clustering, if present, should improve our understanding of the transmission and control of salmonellosis in the field...
  9. doi request reprint Cutaneous pythiosis in a nestling white-faced ibis
    P A Pesavento
    Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California at Davis, Davis, CA 95616 5270, USA
    Vet Pathol 45:538-41. 2008
    ..To the best of the authors' knowledge, this is the first published report of pythiosis in birds...
  10. ncbi request reprint Comparison of the 5.8S rRNA gene and internal transcribed spacer regions of trichomonadid protozoa recovered from the bovine preputial cavity
    R L Walker
    California Animal Health and Food Safety Laboratory, School of Veterinary Medicine, University of California, Davis, CA 95616, USA
    J Vet Diagn Invest 15:14-20. 2003
    ..foetus isolates recovered from the bovine preputial cavity...
  11. ncbi request reprint Listeriosis in a cockatiel (Nymphicus hollandicus)
    H L Shivaprasad
    California Animal Health and Food Safety Laboratory System, Fresno Branch, University of California, Davis, 2789 South Orange Avenue, Fresno, CA 93725, USA
    Avian Dis 51:800-4. 2007
    ..Listeria monocytogenes also was detected in affected tissues by immunohistochemistry...
  12. pmc Identification by subtractive hybridization of sequences specific for Salmonella enterica serovar enteritidis
    P G Agron
    Biology and Biotechnology Research Program, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
    Appl Environ Microbiol 67:4984-91. 2001
    ..These results provide a basis for developing a rapid, sensitive, and highly specific detection system for Salmonella serovar Enteritidis and provide sequence information that may be relevant to the unique characteristics of this serovar...
  13. ncbi request reprint Immunohistochemical identification of Campylobacter fetus in natural cases of bovine and ovine abortions
    C M Campero
    Animal Health Group, Instituto Nacional de Tecnologia Agropecuaria INTA, CC 276 7620 Balcarce, Argentina
    J Vet Med B Infect Dis Vet Public Health 52:138-41. 2005
    ..The C. fetus IHC procedure performed on formalin fixed tissues is a practical tool for the diagnosis of natural cases of ovine and bovine abortion caused by C. fetus...
  14. ncbi request reprint Differential expression and alternative splicing of TRP channel genes in smooth muscles
    R L Walker
    Department of Physiology, University of Nevada School of Medicine, Reno, Nevada 89557, USA
    Am J Physiol Cell Physiol 280:C1184-92. 2001
    ..Splice variants for TRP7, deleted for exons encoding amino acids including transmembrane segment S1, predominated in murine smooth muscles, while the full-length form of the transcript was expressed in canine smooth muscles...
  15. pmc Novel human and mouse genes encoding an acid phosphatase family member and its downregulation in W/W(V) mouse jejunum
    I Takayama
    Department of Medicine, Yamanashi Medical University School of Medicine, Yamanashi 409 3898, Japan
    Gut 50:790-6. 2002
    ..The aim of the present study was to differentially examine gene expression in the small intestines of wild-type and W/W(V) mutant mice...
  16. ncbi request reprint Salpingitis in Pekin ducks associated with concurrent infection with Tetratrichomonas sp. and Escherichia coli
    R Crespo
    California Animal Health and Food Safety Laboratory System, Fresno Branch, 93725, USA
    J Vet Diagn Invest 13:240-5. 2001
    ..8S ribosomal RNA gene and the flanking internal transcribed space regions of the trichomonad isolate did not closely match with available sequences of the same region of other trichomonadid protozoa...
  17. pmc Molecular typing of papillomatous digital dermatitis-associated Treponema isolates based on analysis of 16S-23S ribosomal DNA intergenic spacer regions
    L V Stamm
    Program in Infectious Diseases, Department of Epidemiology, School of Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599 7435, USA
    J Clin Microbiol 40:3463-9. 2002
    ..PCR amplification of the 16S-tRNA(Ile) region of ISR2 permitted rapid phylotyping of California and Iowa PDD-associated Treponema isolates based on product length polymorphisms...