Figure 5.

Plasma glucagon levels following the ingestion of glucose (black circles), glutamine (white circles) and water (black squares) in (A) LEAN (n = 3) (B) OB-CON (n = 8) and (C) OB-DIAB (n = 7) subjects. (D) Glucagon area under the curve (AUC) following the ingestion of glucose (black bars), glutamine (white bars) and water (grey bars) in the three study groups. Data are mean ± SE. *P < 0.05, †P < 0.01 and ‡P < 0.001 vs water (paired t-test). There were no differences in baseline glucagon levels within each group between visits.