since the presence of specific antigens in vitro were necessary for these observed stimulatory effects on pfc 's , and since antigens were producing an effect on antibody production on cells which were being suppressed by these inhibitors , added initially , it was further suggested that one role of antigen in the immune response was concerned with the completion of antibody synthesis on the ribosomes , perhaps by acting as an inducer as has been suggested previously ( 1 ) .
C0003320
antigen
C0301872
immune