Fig 3. Time courses of glucose output during L-glutamine infusion (5 mM) in livers from control and diabetic rats after fasting periods of 48 and 72 hours.

L-Glutamine infusion was initiated at 10 minutes perfusion time, as indicated by the black arrows. Legends: control, ●—●; type 1 diabetes, ■—■; type 2 diabetes, ○—○. Statistically significant differences between control and type 1 diabetes are indicated by the symbol *.