spermatozoon
One with which a nest is shared, such as a baby bird and its siblings or figuratively a child with children it is raised with.
(cytology) A reproductive cell or gamete of a male, carried in semen, that fertilizes an ovum to produce a zygote.
Relating to bacteria of the genus Leptospira, or to leptospiruria
(American spelling) A sexually transmitted infection caused by Neisseria gonorrhoeae, a species of bacteria (the gonococcus) that affects the mucous membrane of the genital and urinary tracts.
顕微鏡下で、研究者は卵子に向かって泳ぐ一個の精子を観察した。
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