under this condition , the binding was specific since displacement studies showed no inhibition of 125 ( i ) -insulin binding by gh , hcg , acth and glucagon , whereas half maximal inhibition was achieved using 5 10 ( -10 ) m insulin , 3 10 ( -9 ) m igf1 and 2 10 ( -8 ) m proinsulin .
C0021641
insulin
C0033362
proinsulin