we also examined whether b cell development is mediated by lymphokines from immunoregulatory t cells - that is , b cell stimulatory factors ( bsf ) and cofactors ( cobsf ) - which include b cell growth factor ( bcgf ) , putative alpha b cell immunoglobulin ( ig ) heavy chain switch factor ( bswf alpha ) , and b cell differentiation factor ( bcdf ) , as well as interleukin-2 ( il-2 ) .
C1511002
b cell development
C0004561
b cell