proinsulin , insulin ( 62.5-250 ng/ml ) , insulin-like growth factor i and ii ( 6.25-25 ng/ml ) significantly ( p less than 0.05-0.001 ) augmented colony formation in a dose-dependent manner , with the somatomedins being 8 times more effective than proinsulin or insulin .
C0021665
insulin-like growth factor i
C0037657
somatomedins