%0 Journal Article %T In vivo CD40-gp39 interactions are essential for thymus-dependent humoral immunity. II. Prolonged suppression of the humoral immune response by an antibody to the ligand for CD40, gp39 %J The Journal of Experimental Medicine %V 178 %N 5 %P 1567-1575 %@ 0022-1007 %D 1993-11-01 %I The Rockefeller University Press %~ DeepDyve