we report that tgf-beta is a potent , reversible inhibitor of adipocyte differentiation ( 50 % inhibition at approximately 0.06-0.08 ng/ml ) , while other biologically active polypeptides , such as epidermal growth factor ( egf ) , human growth hormone ( hgh ) , and somatomedin c , have no specific effect on differentiation at even higher concentrations ( 200 ng/ml ) .
C0040690
tgf-beta
C0007589
differentiation