[Immunization of the nude mouse against mouse hepatitis virus through the transfer of sensitized lymphocytes]

Nude (nu/nu) mice failed to resist to virulent mouse hepatitis virus (MHV) infection after vaccination with inactivated virus. Resistance was induced in nu/nu mice by the transfer of spleen cells from heterozygous haired (nu/ +) mice concomitantly with the vaccination, and the effect was more remarkable with spleen cells from immunized nu/ + mice. Antibody was demonstrable in nu/nu mice having received nu/ + cells and survived challenge infection.