polyclonal differentiation of unprimed b cells into igm-producing cells induced by lipopolysaccharide ( lps ) or t cell-derived lymphokine b151-trf2 has been shown to contain a process of i-a-restricted b-b cell interaction , so that the b cell responses are inhibited by monoclonal antibodies ( mab ) specific for i-a molecules .
C1511002
differentiation
C0007634
cells