顶体

Investigation of the proteins interaction and their signal transduction during the process of sperm acrosome reaction is extremely essential for the further understanding of the molecular mechanism of fertilization.

研究精子顶体反应过程中相关分子作用的信号传导通路，对进一步深入了解受精的分子机制具有重要的影响。

Nm Ultraviolet light was used to study the effect in acrosome reaction and fertilization ability of UV irradiated Chinese shrimp sperm.

研究了 36 5 nm波长紫外线辐射中国对虾精子对其顶体反应和受精能力的影响。

Western blot and double staining analyses show NYD-SP27 becomes detached from sperm, as they undergo capacitation and acrosome reaction.

Western blot和双染的研究表明在精子发生获能和顶体反应的过程中NYD-SP27逐渐从精子上丢失。

The first contact of the sperm head with the egg's jelly coat triggers the acrosome reaction, in which enzymes

当精子和卵子的胶状膜发生接触时，触发了顶体反应。

There are several cell signalings involved in sperm acrosome reaction, such as G protein-coupled signal transduction, and receptor tyrosine kinase signal pathway.

精子顶体反应过程中涉及多种细胞信号传导的过程，如G蛋白耦联的信号传导、受体酶氨酸激酶途径等。

Acrosome reaction ; apoptosis ; sperm ; pig

顶体反应；细胞凋亡；精子；猪

Objective To investigate the relationship between ovum fertilization rate and sperm morphology, acrosome reaction in IVF and to explore the influence of parameters of sperm on fertilization rate.

目的 研究体外受精(in vitro fertilization，IVF)中精子形态、顶体反应与卵子受精率之间的关系，分析精子各参数在IVF受精率方面的参考意义。

It was evenly localized on the whole head of the"fresh"human sperm, but became restricted to the plasma membrane of anterior head after capacitation.

结果显示：人精子在体外获能和顶体反应过程中，受精蛋白β的分布位置处于不断的变化之中。

These data strongly suggest that NYD-SP27 is a physiological inhibitor of PLC that acts as an intrinsic decapacitation factor in sperm to prevent premature capacitation and acrosome reaction.

这些数据有力的表明NYD-SP27是一种生理性的PLC抑制剂，它作为精子内的内源性的去获能因子发挥作用以阻止过早的获能和顶体反应的发生。

Spermatozoa of Hemicentrotus pulcherrimus belong to the type of flagelloform, it has a coniform cell nucleus on its head, a small apical body on its forepart, four mitochondria, a couple of central granules, and a flagellum.

海胆精子与其他无脊椎动物的精子一样，属于鞭毛型，其头部包含一个圆锥形的细胞核，前端配有一个小的顶体，还包括4个线粒体、一对中心粒和一根鞭毛。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。