Figure 2.

Competitive binding curves showing the effect of 20 mg/kg of SNAP (□), 20 mg/kg of captopril (●) and 2 ml of DMSO (○) on the binding of insulin to its receptor on erythrocytes. Percentage of ^125-I-insulin. bound is plotted as a function of the unlabelled insulin concentration. Statistical significant differences are indicated by ^*P < 0.05 and ^*P < 0.01.