Assertion: semen's sperm | /r/CapableOf | develop in testicle
Facets:
value: from a cell
type: OTHER
Source sentences:
text: In addition to sperm, which develop in the testicles, there are other organs whose secretions contribute to the composition of semen.
text: Individual sperm develop within the testicles from a cell called a spermatogonium.
text: On average, it takes 50–60 days for sperm to develop in the testicles.