noun, noun which may take the genitive case particle 'no'
testicle; testis
Anatomical term; used in medical or biological contexts. In everyday conversation, 睾丸 (こうがん) is more common.
精巣は男性の生殖器官の一部です。
The testis is part of the male reproductive organ.
精巣の異常を早期に発見することが重
It is important to detect testicular abnormalities early.