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A sperm cell develops from a sperm mother cell. 精细胞从精母细胞发育而成。
The vaccine works by blocking male sperm cell from joining female egg cell. 疫苗阻断雄鼠精细胞同雌鼠卵细胞结合。
That vaccine works after a sperm cell has already joined with an egg. It prevents the fertilized egg from connecting to the wall of a woman's uterus. 那种疫苗是在精细胞已经同卵子结合后才起作用。它阻止受精卵种植在妇女子宫壁上。
The head of the sperm cell and the nucleus of the egg cell then unite and form a new cell: the zygote. 然后，精子的头和卵子的核融合，形成一个新细胞：受精卵。
He believed, however, that each sperm cell already contained, in a "preformed" state, the entire potential human being. 但是，他相信每一个精子细胞已经包含了人体“预成型的”状态，是一个潜在的完整人体。
Syngamy - The fusion of egg and sperm cells into a zygote. Syngamy -融合卵和精子细胞成受精卵。
They mistakenly thought that the sperm cell contained a miniature preformed human Being that grew when it was deposited in the female genital tract. 他们误以为精子细胞在女性外生殖器着床时就已经内含缩小的人体。
A miniature,fully formed individual believed by adherents of the early biological theory of preformation to be present in the sperm cell. 雏型人一个微型的，充分成形的个体，早期生物理论预说的拥护者认为它存在于精子细胞中
A miniature, fully formed individual believed by adherents of the early biological theory of preformation to be present in the sperm cell. 雏型人一个微型的，充分成形的个体，早期生物理论预说的拥护者认为它存在于精子细胞中
Sperm cell stained by Giemsa was clearly seen with mauve edge of cell membrane.The immature sperm cell was stained lighter than mature ones. 结果表明，用姬姆萨原液染色鉴定，精子形态清晰，细胞膜边缘清楚，呈紫红色，未成熟精子的染色程度浅于成熟精子；
Before the discovery of the egg cell, many scientists believed that the head of each sperm cell contained a fully “preformed” little person (homunculus). 在卵细胞发现之前，许多科学家相信精子细胞的头部含有一个全部的“预成型的”小人（矮人）。
He has a low sperm count, ie He has few sperm cells and so is not very fertile. 他的精液中精子含量少.
Dozortsev D,Rybouchkin A,De Sutter P.Human oocyte acti-vation following intracytoplasmic injection: the role of the sperm cell [J].Hum Reprod,1995,9: 430-407. 何方方廖瑞年.;比较金黄地鼠和人卵浆内单精子注射技术受精率[J]
One secondary spermatocyte divides and eventually grows into two sperm cells. 一个次级精母细胞分裂并最终产生两个精子。
Sperm cells are produced in the male gonads or sex glands (testicles). 精子在男性生殖腺或性腺（睾丸）内产生。
But undeveloped male sperm cells, called spermatogonia, do fine in a freezer. 但未发育的雄性精子细胞，即精原细胞，能够较好的冷冻保存。
We focused on several key events during fertilization from membrane fusion to karyogamy of sperm cells and egg cells. 探讨了从精细胞和卵细胞质膜融合到它们的核融合完成这一发育阶段的某些主要事件。
The vaccine we tested includes a protein from the outside of a sperm cell of male guinea pigs. The protein is believed to help sperm cells join with egg cells. 我们试验的疫苗含有取自雄鼠精细胞外部的一种蛋白。据信该蛋白帮助精细胞与卵细胞结合。
Not all bacterium have flagella and no human cells have them besides sperm cells. 并不是所以的细菌都有鞭毛，而人体细胞除了精子外也没有鞭毛。
What is known is that as men age, their ability to repair faulty DNA in sperm cells decreases. 大家都知道随著年龄的增加，精子细胞修复DNA错误的能力相应减弱。