three subtypes of lymphocytes are well defined : b cells that bear surface immunoglobulin and make antibody , cd4+t cells with cd3 alpha beta receptors specific for antigen associated with class ii major histocompatibility complex molecules , and cd8+t cells with cd3 alpha beta receptors specific for antigen associated with class i mhc molecules .
C0034789
surface immunoglobulin
C0003241
antibody