The nature of the effector cells of cell-mediated immune responses to Sendai and Kunz virus infections in mice.

The development of virus-specific cell-mediated immune (CMI) responses to Sendai and Kunz virus infections of the respiratory tract of mice is described. In addition a heterotypic cell-mediated immune response develops during each of the virus infections. Cell depletion studies indicate that the effector cells of the virus-specific CMI responses are theta antigen bearing T lymphocytes. Similar studies of the heterotypic responses suggest that 2 cell types are involved, T lymphocytes and NK cells.