“…The glucose load (0.3 g/kg body wt) was administered over 1 min. Frequent samples for plasma glucose, lactate, insulin, C-peptide, and free fatty acid (FFA) concentrations were obtained at: 2, 3, 4, 5, 6, 8, 10, 12, 15,20,25,30,35,40,60,80, 100, 120, 140, and 180 min. At 20 min, plasma insulin concentration was enhanced by an exogenous square-wave intravenous infusion of regular insulin (0.03 U/kg) lasting 5 min.…”