Insulin secretion curve normal and diabetics 1600 1400 Htype2 1200 1000 800 obese 600 →·type1 400 200 30 90 120 C⊥oc k 1me (hoursInsulin secretion curve :normal and diabetics 0 200 400 600 800 1000 1200 1400 1600 0 3 0 6 0 9 0 120 clock time(hours) insulin(μU/ml） type2 normal obese type 1