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College of Veterinary Medicine

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  • Director, Veterinary Laboratory Animal Program
  • Professor of Laboratory Animal Medicine
  • Department of Comparative Pathobiology
  • Purdue University College of Veterinary Medicine
  • 625 Harrison Street
  • West Lafayette, IN 47907



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Education

  • 1981 - Ph.D. | University of Alabama
  • 1974 - DVM | Auburn University
  • 1970 - BS | University of Tennessee

Experience

  • 2003 - | Director, Veterinary School Laboratory Animal Program, Purdue University School of Veterinary Medicine
  • 2003 - | Professor, Department of Veterinary Pathobiology, Purdue University School of Veterinary Medicine
  • 1997 - | Curator, Mollicutes Collection
  • 1995 - 2000 | Veterinary Medical Officer, Gainesville Veterans Administration Hospital, Gainesville, Florida.
  • 1993 - 2003 | Professor, Department of Pathobiology, College of Veterinary Medicine, University of Florida, Gainesville, Florida
  • 1993 - 2000 | Director, Division of Comparative Medicine, (Animal Resources and Academic Units) University of Florida, Gainesville, Florida.
  • 1990 - 1993 | Professor, Department of Comparative Medicine, University of Alabama at Birmingham, Birmingham, AL.
  • 1985 - 1993 | Research Assistant Professor, Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL. (II_ appointment)
  • 1985 - 1990 | Associate Professor, Department of Comparative Medicine, University of Alabama at Birmingham, Birmingham, AL.
  • 1981 - 1985 | Research Assistant Professor, Department of Comparative Medicine, University of Alabama at Birmingham, Birmingham, AL.
  • 1974 - 1981 | Postdoctoral Fellow, Department of Comparative Medicine, University of Alabama at Birmingham, Birmingham, AL.

Selected Publications

  • Cassell, G.H. and Davis, J.K.: Protective effect of vaccination against mycoplasma respiratory disease in rats. Infect. Immun. 21:69-75, 1978.
  • Cassell, G.H., Davis, J.K., Wilborn, W.H., and Wise, K.S.: Pathobiology of mycoplasmas. In: Microbiology, 1978. Schlesinger, D. ed. Am. Soc. Microbiol., Washington, D.C., pp. 399-403, 1978.
  • Cassell, G.H., Lindsey, J.R., Baker, H.J., and Davis, J.K.: Mycoplasmal and rickettsial diseases. In: The Laboratory Rat. Vol. 1., H.J. Baker, J.R. Lindsey, and S.H. Weisbroth, eds. Academic Press, Inc., N.Y., pp. 243-269, 1979.
  • Davis, J.K., Delozier, K.M., Asa, D.K., Minion, F.C., and Cassell, G.H.: Interactions between murine alveolar macrophages and Mycoplasma pulmonis in vitro. Infect. Immun. 29:590-599, 1980.
  • Davis, J.K., Maddox, P.A., Thorp, R.B., and Cassell, G.H.: Immunofluorescent characterization of lymphocytes in lungs of rats infected with Mycoplasma pulmonis. Infect. Immun. 27:255-259, 1980.
  • Cassell, G.H., Davis, J.K., and Lindsey, J.R.: Control of Mycoplasma pulmonis infection in rats and mice: detection and elimination vs. vaccination. Isr. J. Med. Sci. (Special suppl.) 17:674-677, 1981.
  • Cassell, G.H., Davis, J.K., Lindsey, J.R., Cole, B.C., and Hartley, M.W.: Arthritis of rats and mice: Implications for man. Isr. J. Med. Sci. 17:608-615, 1981.
  • Cassell, G.H., Lindsey, J.R., and Davis, J.K.: Respiratory and genital mycoplasmosis of laboratory rodents: Implications for biomedical research. Isr. J. Med. Sci. (Special Suppl.) 17:548-554, 1981.
  • Cassell, G.H., Lindsey, J.R., Davis, J.K., Davidson, M.K., Brown, M.B., and Mayo, J.G.: Detection of natural Mycoplasma pulmonis infection in rats and mice by an enzyme-linked immunosorbent assay (ELISA). Lab. An. Sci. 31:676-682, 1981.
  • Davis, J.K., Cassell, G.H., Minion, F.C., and Wise, K.S.: Mycoplasma host-cell interactions resulting in chronic inflammation: Acquisition of host antigens and other mechanisms. Isr. J. Med. Sci. 17:633-636, 1981.
  • Davis, J.K. and Cassell, G.H.: Murine respiratory mycoplasmosis in LEW and F344 rats: strain differences in lesion severity. Vet. Path. 19:280-293, 1982.
  • Davis, J.K., Thorp, R.B., Maddox, P.A., and Cassell, G.H.: Murine respiratory mycoplasmosis(MRM) in F344 and LEW rats. Evolution of lesions and lung lymphoid cell populations. Infect. Immun. 36:720-729, 1982.
  • Brown, M.B., Minion, F.C., Davis, J.K., Pritchard, D.G., and Cassell, G.H.: Antigens of Mycoplasma hominis. Sex. Trans. Dis. 10:247-255, 1983.
  • Cassell, G.H., Brown, M.B., Younger, J.B., Blackwell, R.F., Davis, J.K, Marriott, P., and Stagno, S.: Incidence of genital mycoplasmas in women at the time of diagnostic laparoscopy. Yale J. Biol. Med. 56:557-563, 1983.
  • Cassell, G.H., Davidson, M.K., Davis, J.K., Lindsey, J.R.: Recovery and identification of murine mycoplasmas. In: Methods in Mycoplasmology, Vol. II, Tulley, J.G., Razin, S.H., eds., Academic Press, N.Y., pp. 129-142, 1983.
  • Cassell, G.H., Davis, J.K., Lindsey, J.R., Davidson, M.K., Brown, M.B., and Baker, H.J.: Detection of Mycoplasma pulmonis Infections by ELISA. Lab. Ani. 12:27-38, 1983.
  • Cassell, G.H., Davis, R.O, Waites, K.B., Brown, M.B., Marriott, P.M., Stagno, S., and Davis, J.K.: Isolation of Mycoplasma hominis and Ureaplasma urealyticum from amniotic fluid at 166-20 weeks gestation: Potential effect on pregnancy outcome. Sex Trans.
  • Cassell, G.H., Younger, J.B., Blackwell, R.E., Davis, J.K., Brown, M.B., Marriott, P.M. and Stagno, S.: Microbiologic study of infertile females at time of diagnostic laparoscopy: Association of Ureaplasma urealyticum with a defined subpopulation. N. Eng.
  • Cassell, G.H., Davis, J.K., Cox, N.R., Davidson, M.K., and Lindsey, J.R.: Mycoplasma pulmonis detection in rodents: Lesson for diagnosis in other species. Isr. J. Med. Sci. 20: 859-865, 1984.
  • Cassell, G.H., Clyde, W.A., Davis, J.K.:Mycoplasmal Respiratory Infections. In: The Mycoplasmas, Vol. IV, Mycoplasma Pathogenicity, S. Razin and M.F. Barile (eds). Academic Press, Inc., N.Y., pp. 69-107, 1985.
  • Davis, J.K., Parker, R.F., White, H., Dziedzic, D., Taylor, G., Davidson, M.K., Cox, N.R., and Cassell, G.H.: Strain differences in susceptibility to murine respiratory mycoplasmosis in C57BL/6 and C3H/HeN mice. Infect. Immun. 50:647-654, 1985.
  • Davis, J.K., Simecka, J.W., Williamson, J.S.P., Ross, S.E., Juliana, M.M., Thorp, R.B., and Cassell, G.H.: Nonspecific lymphocyte responses in F344 and LEW rats: susceptibility to murine respiratory mycoplasmosis and examination of cellular basis for stra
  • Cassell, G.H., Cox, N.R., Davis, J.K., Brown, M.B., Minion, F.C., and Lindsey, J.R.: State-of-the-art detection methods for rodent mycoplasmas. In: Complications of Viral and Mycoplasmal Infections in Rodents to Toxicology Research and Testing. 6th CIIT C
  • Cassell, G.H., Davis, J.K., Simecka, J.W., Lindsey, J.R., Cox N.R., Ross, S., and Fallon, M.: Mycoplasmal infections: Disease Pathogenesis, implications for biomedical research, and control. In: Viral and Mycoplasmal Infections in Laboratory Rodents: Effe
  • Cassell, G.H., Waites, K.B., Gibbs, R.S., and Davis, J.K.: Role of Ureaplasma urealyticum in amnionitis. Pediatr. Infect. Dis. 5:S247-S252, 1986.
  • Davis, J.K., Thorp, R.B., Parker, R.F., White, H., Dziedzic, D., D'Arcy, J., and Cassell, G.H.: Development of an aerosol model of murine respiratory mycoplasmosis in mice. Infect. Immun. 54:194-201, 1986.
  • Gibbs, R.S., Cassell, G.H., Davis, J.K., and St. Clair, P.J.: Further studies on genital mycoplasmas in intra-amniotic infection: Blood cultures and serologic response. Am. J. Obstet. Gynecol. 154:717-726, 1986.
  • Horowitz, S.A., Duffy, L. Garrett, B., Stephens, J., Davis, J.K., and Cassell G.H.: Can group- and serovar-specific proteins be detected in Ureaplasma urealyticum? Pediatr.Infect.Dis. 5(Suppl):S325-31. 1986.
  • Pinson, D.M., Schoeb, T.R., Lindsey, J.R., and Davis, J.K.: Evaluation by scoring and computerized morphometry of lesions of early Mycoplasma pulmonis infection and ammonia exposure in F344/N rats. Vet. Pathol. 23:550-555, l986.
  • Williamson, J.S.P., Davis, J.K., and Cassell, G.H.: Polyclonal activation of rat splenic lymphocytes after in vivo administration of Mycoplasma pulmonis and its relation to in vitro response. Infect. Immun. 52:594-599, 1986.
  • Simecka, J.W., Davis, J.K., and Cassell, G.H.: Distribution of Ia antigens and T lymphocyte Subpopulations in rat lungs. Immunol. 57:93-98, 1986.
  • Brown, M.B., Cassell, G.H., McCromack, W.M., and Davis, J.K.: Measurement of antibody to Mycoplasma hominis by an enzyme-linked immunoassay and detection of class-specific antibody responses in women with postpartum fever. Am. J. Obst. Gyne. 156:701-708,
  • Cassell, G.H., Davis, J.K., Waites, K.B., Rudd, P.T., Talkington, D., Crouse, D., and Horowitz, S.A.: Pathogenesis and significance of urogenital mycoplasmal infections. In: Urogenital Infections, J.M. Campos, and L.A. Miller, eds. Plenum Publishing Corpo
  • Davidson, M.K., Lindsey, J.R., and Davis, J.K.: Requirements and selection of an animal model. Isr. J. Med. Sci. 23:551-555, 1987.
  • Davis, J., Cassell, G.H., Gambill, G., Cox, N., Watson, H., and Davidson, M.: Diagnosis of murine mycoplasmal infections by enzyme-linked immunosorbent assay (ELISA). Isr. J. Med. Sci. 23:717-722, 1987.
  • Davis, J.K., Gaertner, D., Cox, N.C., Lindsey, J.R., Cassell, G.H., Davidson, M.K., Kervin, K.C., and Rao, G.N.: The role of Klebsiella oxytoca in utero-ovarian infection B6C3F1 mice. Lab. Ani. Sci. 37:159-166, 1987.
  • Horowitz, S.A., Garrett, B., Davis, J.K,, and Cassell, G.H.: Isolation of Mycoplasma pulmonis membranes and identification of surface antigens. Infect. Immun. 55:1314-1320, 1987.
  • Parker, R.F., Davis, J.K., Blalock, D.k., Thorp, R.B., Simecka, J.W., and Cassell, G.H: Pulmonary clearance of Mycoplasma pulmonis in C57BL/6N and C3H/HeN mice. Infect. Immun. 55:2631-2635, 1987.
  • Simecka, J.W., Davis, J.K., and Cassell, G.H.: Specific vs. nonspecific immune responses in murine respiratory mycoplasmosis. Isr. J. Med. Sci. 23:485-487, 1987.
  • Watson, H.L., Cox, N.R., Davidson, M.K., Blalock, D.K., Davis, J.K., Dybvig, K., Horowitz, S.A., and Cassell, G.H.: Mycoplasma pulmonis proteins common to murine mycoplasmas. Isr. J. Med. Sci. 23: 442-447, 1987.
  • Watson, H.L., Davidson, M.K., Cox, N.R., Davis, J.K., Dybvig, K., and Cassell, G.H.: Protein variability among strains of Mycoplasma pulmonis. Infect. Immun. 55:2838-2840, 1987.
  • Cassell, G.H., Crouse, D.T., Waites, K.B., Rudd, P.T. and Davis, J.K.: Does Ureaplasma urealyticum cause respiratory disease in newborns? Ped. Infect. Dis. 7:535-541, 1988.
  • Cassell, G.H., Waites, K.B., Horowitz, S.A. and Davis, J.K.: Mycoplasmal arthritis In: Infections in Rheumatic diseases. Lewis Espinoza, ed. Grune and Stratton. Page 235-241, 1988.
  • Cox, N.R., Davidson, M.K., Davis, J.K., and Cassell, G.H.: Natural mycoplasmal infections in isolator-maintained LEW/Tru Rats. Lab. Ani. Sci. 38(4):381-388, 1988.
  • Davidson, M.K., Davis, J.K., Lindsey, J.R. and Cassell, G.H.: Clearance of different strains of Mycoplasma pulmonis from the respiratory tract of C3H/HeN mice. Infect. Immun. 56:2163-2168, 1988.
  • Parker, R.F., Davis, J.K., Cassell, G.H., White, H., Dziedzic, D., Blalock, D.K., Thorp, R.B., and Simecka, J.W.: Short-term exposure to nitrogen dioxide enhances susceptibility to murine respiratory mycoplasmosis and decreases intrapulmonary killing of M
  • Rudd, P.T., Cassell, G.H., Waites, K.B., Davis, J.K. and Duffy, L.B.: Ureaplasma urealyticum pneumonia: Experimental production and demonstration of age-related susceptibility. Infect. Immun. 57:918-925, 1989.
  • Simecka, J.W., Davis, J.K., and Cassell, G.H.: Serum antibody does not account for differences in the severity of chronic respiratory disease due to Mycoplasma pulmonis in LEW and F344 rats. Infect. Immun. 57:3570-3575, 1989.
  • Simecka, J.W., Patel, P., Davis, J.K., and Cassell, G.H.: Upper respiratory trat is the major site of antibody production in mycoplasmal induced chronic respiratory disease. Reg. Immunol. 2(6):385-389, 1989.
  • Davidson, M.K., Lindsey, J.R., Davis, J.K., Parker, R.F., Ross, S.E., Watson, H.L., Tully, J.G. and Cassell, G.H.: Alternative approach to identification of virulence mechanisms of Mycoplasma pulmonis. Zbl. Bakt. Suppl. 20. Recent Advances in Mycoplasmolo
  • Davis, J.K., Parker, R.F., Davidson, M.K., Cassell, G.H., and Lindsey, J.R.: Pulmonary Clearance of Mycoplasma pulmonis in Mice. Zbl. Bakt. Suppl. 20. Recent Advances in Mycoplasmology, 819-822, 1990.
  • Ross, S.E., Davis, J.K., and Cassell, G.H.: Induction of hyper Ia antigen expression on F344 rat B lymphocytes by Mycoplasma pulmonis mitogen. Zbl. Bakt. Suppl. 20. Recent Advances in Mycoplasmology, 584-592, 1990.
  • Davis, J.K., Davidson, M.K. and Schoeb, T.R: Murine respiratory mycoplasmosis: a model to study effects of oxidants. Res. Rep. Health Eff. Inst. 1-29; discussion 31-43, 1991
  • Simecka, J.W., Patel, P., Davis, J.K., Ross, S.E., Otwell, P., Cassell, G.H.: Specific and nonspecific antibody responses in different segments of the respiratory tract in rats infected with Mycoplasma pulmonis. Infect. Immun. 59(10): 3715-3721, 1991.
  • Talkington, D.F., Davis, J.K., Canupp, K.C., Garrett, B.K., Waites, K.B., Huster, G.A., Cassell, G.H.: The effects of three serotypes of Ureaplasma urealyticum on spermatozoal motility and penetration in vitro. Fertil. Steril. 55(1): 170-176, 1991.
  • Subcommittee on Rodent Viral and Mycoplasmal Infections of the American Committee on Laboratory Animal Disease (ACLAD): Detection methods for the identification of rodent viral and mycoplasmal infections. Lab. Anim. Sci. 41(3):199-225, 1991 (Contributor a
  • Davis, J.K., Davidson, M.K., Schoeb, T.R., and Lindsey, J.R.: Decreased intrapulmonary killing of Mycoplasma pulmonis after short-term exposure to NO2 is associated with damaged alveolar macrophages. Am. Rev. Respir. Dis. 145:406-411, 1992.
  • McIntosh, J.C., Simecka, J.W., Ross, S.E., Davis, J.K., Miller, E.J., and Cassell, G.H.: Infection-induced airway fibrosis in two rat strains with differential susceptibility. Infect. Immun. 60(7):2936-2942, 1992.
  • Ross, S.E., Simecka, J.W., Gambill, G.P., Davis, J.K., and Cassell, G.H.: Mycoplasma pulmonis possesses a novel chemoattractant for B lymphocytes. Infect Immun . 60:669-674, 1992.
  • Nichols, P.W., Schoeb, T.R., Davis, J.K., Davidson, M. K., and Lindsey, J.R.: Pulmonary clearance of Mycoplasma pulmonis in rats with respiratory viral infections or of susceptible genotype. Lab Animal Sci. Lab. Anim. Sci. 42:1-4, 1992.
  • Simecka, J.W., Davis, J.K., Davidson, M.K., Ross, S.E., Stadtander, C.T.K.-H., and Cassell, G.H.: Mycoplasma diseases of animals. In Mycoplasmas: Molecular Biology and Pathogenesis. J. Maniloff, R. McElhaney, L. Finch, and J. Baseman eds. Am. Soc. Microbi
  • Davidson, M.K., Davis, J.K., Gambill, G. P., Cassell, G. H., Lindsey, J.R. 1994. Mycoplasmas of laboratory rodents. In Mycoplasmosis in Animals: Laboratory Diagnosis. H. W. Whitford, R. F. Rosenbusch, L. H. Lauerman eds. Iowa State University Press, Ames
  • Faulkner, C.B., Davidson, M.K., Davis, J.K., Schoeb, T.R., Simecka, J.W., and Lindsey, J.R.: Acute Mycoplasma pulmonis infection associated with coagulopathy in C3H/HeN mice. Lab. Animal Sci. 45:368-372, 1995.
  • Swing, S.P., Davis, J.K., and Egan, M.L.: In vitro effects of Mycoplasma pulmonis on murine natural killer cell activity. Lab. Animal Sci. 45:352-356, 1995.
  • Cartner, S.C., Simecka, J.W., Lindsey, J.R., Cassell, G.H., and Davis, J.K.: Chronic respiratory mycoplasmosis in C3H/HeN and C57Bl/6N mice: Lesion Severity and Antibody Response. Infect. Immun. 63:4138-4142, 1995.
  • Liang, S.C., Schoeb, T.R., Davis, J.K., Simecka, J.W., Cassell, G. H., and Lindsey, J.R.: Comparative severity of respiratory lesions of sialodacryoadenitis virus and Sendai virus infections in LEW and F344 rats. Vet Pathol. 32: 661-667, 1995.
  • Baumgartner, T.G., Henderson G.N., Davis, J.K., Mladinich, C., Samrag, G.P.N., Kubilis, P.S.: Study of the safety and Efficacy of using a LEA (Pall) filtration of propofol in 10% lipid emulsion (DiprivanTM) in the canine model. Final Study Report (Protoco
  • Faulkner CB, Simecka JW, Davidson MK, Davis JK, Schoeb TR, Lindsey JR, Everson MP. Gene expression and production of TNF- , IL-1, IL-6, and IFN- in C3H/HeN and C57BL/6N mice in acute Mycoplasma pulmonis disease. Infect Immun 63:4084-4090, 1995
  • Schoeb, T.R., Davis, J. K., Lindsey, J. R. Murine respiratory mycoplasmosis, rat and mouse. In International Life Sciences Institute Monographs on Pathology of Laboratory Animals: Respiratory System. T.C. Jones, U. Mohr, R.D. Hunt(eds.); Springer-Verlag,
  • Schoeb TR, Davidson MK, Davis JK. Pathogenicity of cilia-associated respiratory (CAR) bacillus isolates for F344, LEW, and SD rats. Vet Pathol 34:263-270. 1997.
  • Schoeb TR, Dybvig K, Davidson MK, Davis JK. Detection of urogenital mycoplasma and ureaplasma infections in primates by polymerase chain reaction (PCR). Lab Anim Sci.47: 468-471.1997
  • Schoeb TR, Dybvig K, Davidson MK, Davis JK. Detection by nested PCR of Mycoplasma pulmonis in isolates of cilia-associated respiratory (CAR) bacillus and in respiratory tracts of rats. J Clin Microbiol 35:: 1667-1670.1997.
  • Boinski. S.; Swing, S.P.; Gross, T.P.; Davis, J.K. . Environmental enrichment of brown capuchins (Cebus apella): behavioral and plasma and fecal cortisol measures of effectiveness. American Journal of Primatology 47:1-20. 1999
  • Liang, S.-C., Simecka, J.W., Cassell, G.H., and Davis, J.K. Antibody responses after Sendai virus infection and their role in upper and lower respiratory tract disease in rats. Lab. Animal Sci. 49:385-394. 1999.
  • Reyes, L., Davidson, MK., Thomas, L. Davis, JK. Effects of Mycoplasma fermentans strain incognitus on differentiation of THP-1 cells. Infect. Immun. 67: 3188-319,.1999.
  • Boinski S.; Gross, T.P.; Davis, J.K.. Terrestrial predator alarm vocalizations are a valid monitor of stress in captive brown capuchins (Cebus apella). Zoo Biology. 18:295-312, 1999.
  • Davis, JK., Crouse, DT., Robertson, JA., Davidson, MK., Brown, MB., Reyes, L. The Role of Ureaplasma urealyticum in Human Reproductive and Neonatal Diseases. Infect Dis Rev 1(3):200-207.1999
  • Dohm, ED., Richards, DS, Robertson, JA., Theele, DP., Schoeb, TR., Davis, JK., Thomas, LC., Davidson, MK. Vertical Transmission of Ureaplasma urealyticum in Pregnant Pigtail Macaques (Macaca nemestrina). Infect Dis Rev 1(3):208-213.1999
  • Schoeb TR, Davis JK. Comment on "Barrier facilities for transgenic rodents in academic centers--a two-edged sword". Comp Med 53:116-8. 2003
  • Schleig, PM, Buergelt, CD, Davis, JK, Williams,E, Monif, GRG, and Davidson, MK. Attachment of Mycobacterium avium subspecies paratuberculosis to bovine intestinal organ Cultures: Method Development and Strain Differences. Vet Microbiol. 108: 271-279. 2005