THE ROLE OF NONLYMPHOID ACCESSORY CELLS IN THE IMMUNE RESPONSE TO DIFFERENT ANTIGENS

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Abstract
Tissue culture techniques were combined with cell separation procedures to investigate the cellular requirements for a response to antigen, leading to the production of antibody-forming cells. Mouse spleen was dissociated, and the cells were separated into various groups on the basis of density, size, and active adherence. The ability of fractions to initiate a response in vivo, on transfer to an irradiated recipient, was compared to the response in vitro; and this ability was correlated with the presence or absence of phagocytic cells. Two different antigens were studied, sheep erythrocytes (SRC) and polymerized bacterial flagellin (POL).