Fig. 1. Time course of aspartate amino transferase and alanine amino transferase (mean ± SEM) following a 45-min period of ischemia (Isch) in three groups of animals: animals with a caudal ischemia while the nitric oxide (NO) concentration of the caudal lobe was recorded (open circles), same ischemia while the upper lobe NO concentration was recorded (closed circles), and no ischemia (open diamonds). Plasma activity is expressed in international units per milliliter of plasma at constant protein concentration to include hemodilution effect. P < 0.05 after 4 h of reperfusion compared with the control group.