1. Allen, A. & Nomura, T. Manual of Microbiologic Monitoring of Laboratory Animals, NIH Pub. No. 86-2498. (U.S. Government Printing Office, Washington, DC, 1986).
2. Baker, H.J., Lindsey, J.R. & Weisbroth, S.H. in The Laboratory Rat, Vol. 1, Biology and Diseases (eds. Baker, H.J., Lindsey, J.R. & Weisbroth, S.H.) 169–192 (Academic Press, New York, 1979).
3. Baker, D.G. Natural pathogens of laboratory mice, rats and rabbits and their effects on research. Clin. Microbiol. Rev. 11, 231–266 (1998).
4. Nicklas, W. et al. Implications of infectious agents on results of animal experiments. Lab. Anim. 33 (Suppl. 1), 39–87 (1999).
5. Van der Waaij, D. & van Beckkum, D.W. in Husbandry of Laboratory Animals. Proceedings of the 3rd International Symposium Organized by the International Committee on Laboratory Animals (ed. Conalty, M.L.) 373–386 (Academic Press, London, 1967).