B cell na-achọpụta pathogens mgbe antibodies na elu ya jikọtara ya na antigen pụrụ iche. Nke a na-ebute mgbochi / antibody site na B cell ma na-edozi site na proteolysis n'ime peptides. B cell na-egosipụta ndị a antigenic peptides na elu ya MHC klas II ụmụ irighiri ihe. Ngwakọta nke MHC na antigen na-adọta onye na-enyere aka T cell, nke na-ewepụta lymphokines ma na-arụ ọrụ B cell. Ka mkpụrụ ndụ B ahụ na-arụ ọrụ na-amalite ịkekọrịta, ụmụ ya (plasma cells) na-ewepụta ọtụtụ nde akwụkwọ nke antibody nke na-amata antigen a. Ndị a na-agbasa na ọbara na lymph plasma, na-ejikọta pathogens na-egosipụta antigen ma na-egosi ha site na mbibi ma ọ bụ na-arụ ọrụ maka mbibi na mbibi site na phagocytes. Antibodies nwekwara ike imebi nsogbu site na-ejikọta nje virus na mkpụrụ ndụ T ma ọ bụ site na-emetụta nje bacteria iji mee ka ha nwee ike ibute
lymphokines