while treatment of the cells with gct-conditioned medium favored proliferation , with only a weak and delayed promotion of the cells towards maturation as reflected by enhanced expression of the mature t-marker t3 but persistent expression of the thymocyte antigen , exposure to all-trans and 13-cis retinoic acid resulted in marked differentiation of both the myeloid and the lymphoid cell characteristics .
C0007634
cells
C0007589
differentiation