Assertion: semen's sperm cell | /r/CapableOf | represent 2 to 5 percent of semen volume
Facets:
Source sentences:
text: Sperm cells, produced by the testes in humans, represent 2 to 5 percent of semen volume; fluids from tubules, glands, & storage areas of the reproductive system bathe them as they travel down, nourishing them, keeping them motile, or participating in certain chemical reactions.