Fig. 5From: Effect of different cardioprotective methods on extracorporeal circulation in fetal sheep: a randomized controlled trialTUNEL assay to detect cell apoptosis (400×). Note: a Apoptosis of cardiomyocytes after ECC in the ECC-only group. b Apoptosis of cardiomyocytes after ECC in the HTK group. c Apoptosis of cardiomyocytes after ECC in the STH group. d Comparison of the apoptotic index of the three groups, *P < 0.05 compared with the ECC-only group; #P < 0.05 compared with the HTK groupBack to article page