“…B cell functions were blocked by both anti-light chain and anti-heavy chain sera [ l , 2,14,18,19,27,31,32,371. Immune reactions mediated by T cells on the other hand, were inhibited by anti-light chain sera [20,23,30,351, but not by anti-p, y or a-chain sera [17,20,231. We have investigated the effect of anti-light and anti-heavy chain sera on human lymphocytes mediating migration inhibition.…”