顶体精子

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

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。

This dissertation is divided into three parts. The first part is studies on calcium distribution changes during spermatogenesis, epididymal maturation, capacitation, acrosome reaction, oocyte maturation and egg fertilization using in situ precipitation by potassium antimonate and Ca〓 fluorescent probes at electron and light microscope levels. The main results are: 1 Ca〓 was probably involved in the condensing process of nucleoplasm during spermatogenesis.

本论文分为三个部分，第一部分主要是采用焦锑酸钾原位定钙法和Ca〓荧光染料在电镜和光镜水平对哺乳动物精子发生、附睾成熟、获能、顶体反应及卵母细胞成熟和卵受精过程中Ca〓的分布变化规律进行了系统的研究。

The mature sperm has a tail a nucleus containing haploid chromosomes and a front end with an acrosome the storage site for enzymes that will aid fertilization.

成熟精子有尾部，单倍体染色体组，头部有顶体，内部储存酶类，有助于受精。

It is associated with the manchette, a transient microtubular structure believed to be important for morphogenesis during spermiogenesis.

我们在小鼠中进行了RIM-BP3基因的敲除，结果表明它的缺失会引起精子头部发育的异常，如核畸形和顶体脱离等，最终导致雄性不育。

Fertilization is a complicated biological process, during which spermatozoa must undergo proper changes in thei...

在这一过程中精子首先必须经过复杂的结构和功能改变，完成获能和顶体反应。

The result of different thawing temperatures indicated that the spermatozoa thawn in 38℃ water showed a better survival rate than those thawn in 50℃ water; the duration of preservation on above 30% survival rate were 4 and 1h, respectively.

结果显示：3%甘油冷冻解冻后精液的活率、活力(38.54%、52.24%)显著(P.05)高于2%甘油组(15.63%、28.22%)，但3%甘油组顶体完整率(11.55%)显著(P.05)低于2%甘油组(21.71%)。38℃水浴解冻后的精子在39℃培养箱中4h内活率高于0.3，而50℃水浴解冻后1h后的活率低于0.3。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。