Zinc in normal human seminal plasma.

Normal human seminal plasma (n = 9) was analysed for zinc by employing the method of instrumental neutron activation analysis. The range of concentration of zinc was from 2.5 to 25.7 mg%. The author is of the opinion that the zinc in seminal plasma functions in two ways. 1. The essential role it has inside the spermatozoa for its motility and 2. to provide a favourable medium for the activity of the spermatozoa. The second function can be replaced by other ions.