Analysis of the Role of Phagocytic Cells in the Generation of H-2-Restricted T-Cytotoxic Effectors to Trinitrophenyl-Conjugated Proteins and Trinitrophenyl-Modified Cells

Studies analyzing the cellular presentation of TNP-BSA indicated that TNP-BSA could be detected on the surface of TNP-BSA-preincubated spleen cells and that such cells could serve as stimulators for the generation of H-2 restricted syngeneic cytotoxic effectors. Depletion of phagocytic cells from spleen cells prior to their incubation with TNP-BSA did not affect their stimulating capacity, indicating that the interaction of the TNP-protein with the cell surface was not mediated by a phagocytic mechanism. However, when both responding and stimulating cell populations were depleted of phagocytic cells, no cytotoxic effector cells were generated either to TNP-BSA or to TNBS-syngeneic cells.