INDUCTION OF CYTOTOXIC T-LYMPHOCYTES SPECIFIC TO THE MOLECULE OF THE CLASS-I MAJOR HISTOCOMPATIBILITY COMPLEX FOR SUBCUTANEOUS IMMUNIZATION IN PADS

T lymphocytes from immune lymph nodes, specific to the molecule of the class I major histocompatibility complex, were found to contain cytotoxic T lymphocyte precursors which mature to become effector cytotoxic T lymphocytes only in the presence of helper cells and L3T4(+), but not Lyt2(+) T helpers. The findings indicate that a subcutaneous injection of alloantigen of the class I major histocompatibility complex for immunization in the pads leads to the creation of the type of microenvironment of the lymph nodes which prevents activation of Lyt2(+) T helpers or leads to the activation of their functionally negligible part.