Abstract
Summary
Epididymal sperm have high trypsin-like enzyme (TLE) activity, CPE activity and neuraminidase activity whereas these enzyme activities are much lower in ejaculated sperm. Incubation of epididymal sperm with seminal plasma caused a decrease in each of these enzyme activities, indicating that seminal plasma inhibitors may transfer to the acrosomal enzymes during ejaculation. Boiled and centrifuged seminal plasma did not inhibit the TLE activity of epididymal sperm but did decrease the CPE and neuraminidase activity.
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