The spermatogonia in the seminiferous tubules of testis are on four different stages, including primary spermatocytes, secondary spermatocytes, spermatoon, and spermatozoa.
生
内有处于不同发育时期的原细
，初级母细，次级母细，子细和子；
词条纠错
X
spermatoon
生词本：
添加笔记：
n. 
细
,子细
细,子细声明：以上例句、词
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spermatolysis, spermatolytic, spermatomere, spermatomerite, spermatomicron, spermatoon, spermatopathia, spermatopathy, spermatophora, spermatophore,
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