Fig. 2From: Freeze-thawing impairs the motility, plasma membrane integrity and mitochondria function of boar spermatozoa through generating excessive ROSThe plasma membrane integrity of the sperm was assessed by the hypo-osmotic swelling test (HOST). 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 groupBack to article page