Abstract
The rate of the appearance of F-body in the spermatozoa of oligospermic patients with sterility was compared to that of normal subjects. A five-minute staining method, using a 0.0025% quinacrine mustard solution, was the procedure. The rate of appearance of the F-body in normal males was 42.4% in average, while it was only 9.3% in oligospermia. As the number of spermatozoa decreases, the rate of appearance of F-body appears to fall.
