查询词典 sperm

Two polar nuclei move to the micropylar end before sperm is released in a gap between the egg cell and central cell and subsequently taking off cytoplasm one after another. The sperm nucleus moving to the egg nucleus runs faster than the one to the polar nuclei. It fuses with the polar nuclei that are moving towards the antipodal cells at the chalazal end, Images showed the fusion process of male and female nuclei and polyspermous fertilization.

精子释放前，两极核移向卵细胞的合点端；两精子释放于卵细胞与中央细胞的间隙后，先后脱去细胞质，然后分别移向卵核和极核，移向卵核的精核快于移向极核的精核；精核与两极核在向反足细胞团方向移动的过程中完成雌雄核融合。

Animal waxes include beeswax; wool wax, used in pharmaceuticals and cosmetics; and sperm oil and sperm aceti, used as lubricants.

羊毛蜡、蜂蜡属动物蜡，用于制药和化妆品。鲸油和鲸蜡都取自抹香鲸，在常温下是液体，主要用作润滑剂。

Methods Male infertility couples from October 2006 to July 2008 were chosen and divided into ICSI group and TESA+ICSI group. ICSI group were 584 oligozoospermia cases with alive normal sperm in spermatic fluid. TESA+ICSI group were 54 obstructive azoospermia cases with alive normal sperm in testicle. Two groups were treated with ICSI after wives obtained oocytes by ovarian stimulation.

选择2006年10月～2008年7月因男性不孕症夫妇行ICSI治疗的患者638例分成两组，ICSI组和TESA+ICSI组，ICSI组为自行排精后精液内可以找到正常形态活精子的少精症患者行ICSI治疗584例，TESA+ICSI组为梗阻性无精子症患者经睾丸穿刺找到睾丸内形态正常活精子行ICSI治疗共54例，两组女方均给予超促排卵用药获取卵母细胞。

Its development as follows: spermatogonia → primary spermatocyte secondary spermatocyte →→→ sperm sperm cells.

其发育过程为：精原细胞→初级精母细胞→次级精母细胞→精子细胞→精子。

The toxicity effect of Aroclor 1254 directly and resulted in the pathological changes of the sexual gland, influenced the nutrient accumulation and maturity division of the spermatocyte , the sphere sperm cell development and sperm maturity.

由于经胎盘及乳汁转运到胎儿和仔鼠的Aroclor 1254的量相对较低，未造成性腺的明显病理变化，使精子形态质量受影响程度明显减小。

What today still confuses scientists is women have no organ like men's spermatophore to store sperm, then where is her sperm' stored.

令医学家至今不解的是，女性并无男性用于贮存精液的精囊一样的器官，那她的"精液"又集中贮存于何处呢？

In addition, some biological events, such as separating the male germ unit, providing movement orbits for the two sperm cells and inducing both sperm to synthesis DNA, may also be related to the degenerated synergid.

另外，雄性生殖单位的解体、提供精细胞的运动轨道和启动精细胞合成DNA的生物学事件也可能与助细胞有关。

This review introduced the study of cell cycle of male and female gametes before fertilization; discussed the question of synergid degeneration; analysed status of research into the movement of both sperm cells in degenerated synergid; and evaluated the preferential fertilization of sperm cells and the egg cell activation of angiosperms.

本文介绍了目前被子植物精、卵细胞融合前后的细胞周期变化、退化助细胞的功能、精细胞在退化助细胞中迁移的研究动态、精细胞的倾向受精和卵细胞的激活等被子植物受精生物学领域中的一些新的研究成果和发展趋势。

It takes about 0.5 h for a pollen tube from germination to arrive at the micropyle. About 0.5 h after pollination, the pollen tube releases two sperms into one synergid. At 0.5-2.5 h after pollination, the egg cell fuses with one sperm to form a zygote. About 10.0 h after pollination, the division of the zygote begins. The duration of the zygote lasts about 2.5-10.0 h. However, one sperm nucleus fuses with two polar nuclei at 1.0-3.0 h after pollination, and 5.0 h after pollination the primary endosperm nucleus begins to divide.

水稻受精过程经历的时间表如下：授粉后，花粉在柱头萌发；花粉萌发至花粉管进入珠孔大约需要0.5小时；授粉后0.5小时左右，花粉管进入一个助细胞，释放精子；授粉后0.5-2.5小时，精卵融合形成合子；授粉后约10.0小时，合子第1次分裂，合子期为授粉后2.5-10.0小时；授粉后1.0-3.0小时，精核与两极核融合；授粉后约5.0小时，初生胚乳核分裂。

We think that centrin play an important role in meiosis during Urechis unicinctus sperm metamorphosis difference and we also think that centrin may be related to trochophore cilia and sperm tail formation,and reconstraction of centrosome after fertilization.

我们推测Centrin在单环刺螠精子发生过程中减数分裂或精子细胞变态分化过程中发挥作用；在单环刺螠早期胚胎发育中，Centrin可能与受精后中心体的重建及担轮幼虫的纤毛形成有关。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。