Figure 3From: Prostasome-like vesicles stimulate acrosome reaction of pig spermatozoaAminopeptidase activity of pig spermatozoa before and after incubation with prostasome-like vesicles. At fixed intervals, aliquots of 50 × 106 cells were withdrawn and assayed for enzyme activity. Values are mean percentage ± SD. *Significantly different from sperm incubated at 0 time (p < 0.05).Back to article page