For instance, a demon could not produce semen.
The authorities said it was virtually impossible for boys that young to produce semen.
Bulls continue to offer the quickest path to improvement since a single bull produces enough semen for 25,000 to 100,000 inseminations in a top year.
Older men produce less semen.
Testicular factors refer to conditions where the testes produces semen of poor quality despite adequate hormonal support and include:
Women don't produce semen.
