1) Burns, W.H., Billups, L.C., and Notkins, A.L. 1975. Thymus dependence of viral antigens. Nature 256 : 654-656.
2) Eaton, G. J., Outzen, H.C., Custer, R.P., and Johnson, F.N. 1975. Husbandry of the “nude” mouse in conventional and germfree environments. Lab. Anim. Sci. 25 : 309-314.
3) Doherty, D.C., and Zinkernagal, R.M. 1974. T cell-mediated immunopathology in viral infections. Transplant. Rev. 19 : 89-120.
4) Dupuy, J.M., Levey-leblond, E., and Prevose, C. 1975. Immunopathology of mouse hepatitis virus type 3 infection. II. Effect of immunosupression in resistant mice. J. Immunol. 114 : 226-230.
5) Fujiwara, K. 1971. Problems in checking inapparent infections in laboratory mouse colonies. An attempt at serological checking by anamnestic response, p. 77-92. In Schneider, H.A. (ed), Defining of the Laboratory Animals : Proceedings. IV. Symposium, International Committee on Laboratory Animals, 4th, Washington, D.C., April 1969. National Academy of Sciences, Washington, D.C.