精子形成

The porine is the polyembryony animal, many obtains the ovocyte from the porine ovary although but the maturity quite to be low; Because the ROSI technology is does not have to grow the mature sole round sperm cell to pour into directly completely in the ovicell nature, jumped over the spermatozoon in to pass through the physiology and the biochemistry, if the ovicell nature mature or the activation degree were insufficient, added the round immature sperm cell maturity quite inferior reason, very possibly Causes the ROSI micro fertilization defeat.

猪是多胎动物，从猪卵巢上获得的卵母细胞数量虽然较多，但成熟度比较低；由于ROSI技术是将没有完全发育成熟的单一圆形精细胞直接注入卵胞质内，跳越了精子在穿过透明带和卵质膜等过程中所发生的生理和生化反应；如果卵胞质成熟或活化程度不够，加之圆形未成熟精细胞成熟度比较差等原因，很可能造成ROSI受精的卵母细胞内部激活因子蓄积减少和生成不足，引起精核解聚困难、精圆核不能形成、第二极体不能排出、卵母细胞孤雌发育率增加等，使ROSI显微受精失败。

Oocytes injected with frozen-thawed sperm were activated by various methods, and the effect on the pronucleus formation and blastocyst formation rate were examined.

方法］冷冻精子解冻洗涤后直接应用于ICSI，ICSI后采用不同激活方法激活卵母细胞，检测其原核形成情况。

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。

Targeted deletion of the RIM-BP3 gene in mice resulted in male infertility due to abnormal sperm heads characterized by deformed nucleus as well as detached acrosome.

为了阐明RIM-BP3的敲除引起雄性不育的机制，我们通过亲和纯化的方法寻找RIM-BP3的相互作用蛋白，发现Hook1与RIM-BP3在精子细胞内形成复合物。

Buddhism has it that when spermatozoon combines with ovum, soul is planted into embryo in time, so baby possibly comes into being.

佛教认为，在精子与卵子结合时，神识适时的介入了胚胎之中，如此婴儿才有形成的可能。

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。

Despite of its important role during embryogenesis and reproductive development,more and more studies implied a critical role for Rhox5 on the determination and differentiation during myogenesis.

除在生殖系统的发育、精子的形成和成熟过程中发挥重要的作用外，多项研究表明其在肌细胞的发生和分化中担任重要角色，有可能作为MyoD基因的上游调控子或者和其他转录因子协同作用，调控肌细胞的早期发生和分化事件。

The marrow cell micronucleus experiment, the marrow cell chromosomic aberration experiment observes mouse's toxicology nature. Results: The nickelous chloride has the genetics toxic effect to the mammal.

结果 该研究下未观察到有明显的诱导小鼠外周血网织红细胞微核形成作用，但有明显的染色体畸变和精子致畸形作用。

And the twist in the story is in the place where the author's encoding and the reader's decoding meet; that is, when the author chooses a sperm as the "hero" of the story and the reader understands the parodic tone behind, the postmodern parody is formed.

而故事的扭转则在作者的编码与读者之解码交会处，也就是在作者选择一只精子作为小说的主人翁，而读者体会出其中戏拟的语气时，整个后现代戏拟於焉形成。

Sperm morphological change after ICSI and factors affecting the pronuclear formation and embryo development of buffalo oocytes after ICSI were investigated in this study.

本研究主要探讨水牛胞质内受精后精子的形态变化、原核形成类型及相关影响因素。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。