Fig. 8. Western blot analysis results for cytochrome c (10 kDa) in control, cardiopulmonary bypass (CPB), and deep hypothermic circulatory arrest (DHCA) groups: control (n = 8), CPB (n = 3), 1-h DHCA (n = 5), 4-h DHCA (n = 6), 8-h DHCA (n = 5), 24-h DHCA (n = 5), 72-h DHCA (n = 4), and 1-week DHCA (n = 3). Relative optical density shown for each group as fold versus control, with corresponding images of bands below. Significant amount of cytochrome c was found at 1 h after DHCA (*P < 0.05).