Immunoblot analysis of Bcl-xL protein expression in liver mitochondrial fraction at 3 and 5 hr post-surgery. Lanes 1 and 4: PH-Control. Lane 2: PH-E1 (100 mg/kg body weight). Lane 3: PH-E2 (600 mg/kg body weight). Lane 5: PH-C1 (30 mg/kg body weight). Lane 6: PH-C2 (100 mg/kg body weight). Quantitation of immunoblot bands was performed by densitometry considering PH-Control as 100%. Results show the mean ± SE of six rats. *Significant difference versus the corresponding PH-Control.