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. 2010 Sep 1;59(11):2936–2940. doi: 10.2337/db10-0728

FIG. 1.

FIG. 1.

Mean ± SE plasma insulin and glucose concentrations and change (Δ) in plasma glucagon concentrations in patients with type 1 diabetes during infusions of zinc-free insulin glulisine with clamped euglycemia from 0 to 60 min on three occasions (decrements in plasma glucagon all P < 0.01) and following 1) discontinuation of insulin glulisine with clamped euglycemia (○), 2) discontinuation of insulin glulisine with clamped hypoglycemia (●) (increments in plasma glucagon P < 0.01), and 3) continuation of insulin glulisine with clamped hypoglycemia (▴), each from 60 to 180 min. Arg, arginine.