TABLE 1.

Study design

	Basal insulin	Stimulated insulin	Glucagon inhibition	Basal (portal) glucagon	GLP-1	Somatostatin infusion	Glucose demand (g)
Day 1		+	+		+		24.5 ± 4.1
Day 2	+			+	+	+	0.3 ± 0.2
Day 3	+		+			+	10.6 ± 1.1
Day 4		+		+		+	11.5 ± 2.7
Day 5		+	+			+	24.5 ± 2.6

Data shown are means ± SE. Study design and glucose demands for each day.