Fig. 3

Mitochondrial function was evaluated using JC-1 (a), TEM ultrastructure (b) and ATP content (c). Data are presented as the means ± SE (n = 3). * P < 0.05, ** P < 0.01 VS the extension period of control group; # P < 0.05, ## P < 0.01 VS the thawed 30 min or thawed 240 min period of NAC group