acrosome中文什么意思

顶角顶体

顶体精子

精虫头粒

精子的顶体

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头帽

• acrosome abnormality:    顶体异常
• acrosome enzyme:    顶体酶
• acrosome granulum:    顶体颗粒

例句与用法

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1. There are two forms of nucleus in the e . carinicanda sperm : fibrous and vesicular ones the sperm ultrastructures of the p . trituberculatus and s . chekiangense consist of nucleus cup , radial arm , acrosome
   2 .精子结构罗氏沼虾与脊尾白虾的精子结构相近，呈图钉状，由棘突、顶帽和精核组成。
2. The head of spermatozoa contains a nucleus but no acrosome . the nuclear fossa developes well . during the process of spermtogenesis , within the nucleus the chromatin condenses step by step into wads , among which are loose chromatin fibers
   成熟精子头部无顶体，主要为核占据，精子形成过程中，细胞核中的染色质浓缩成致密的团块状，团块状的染色质之间分布着松散的纤维状染色质。
3. Northern analysis revealed that p3galt - l was exclusively expressed in the brain while that p4galt - l was expressed highly in testis , moreover , sperm surface p4galt - l was suggested to play a significant role in signal transduction involving the acrosome reaction in the mouse . in the present study , we mainly detected the developmental expression and function of p - galactosyltransferases in mouse brain and testis . we first characterized the developmental expression of 3galt - l in mouse brain
   - 1 ， 3 -半乳糖基转移酶- 1 ( 3galt - 1 )主要在脑中表达，而- 1 ， 4 -半乳糖基转移酶- 1在睾丸中表达较高，且精子细胞表面的- 1 ， 4 -半乳糖基转移酶- 1在精卵结合后的顶体反应中发挥了重要的生理作用。
4. Nucleoli do not emerge in this process . the number of the organelles increase until secondary spermatocyte stage . mitochondria accumulate together , merging together with lysosomes and golgi bodies at the early spermatid stage , and finally the lamellar structure is formed , which forms the acrosome at last
   在精子发生过程中，线粒体、内质网和核糖体逐渐增多，其中线粒体数目在次级精母细胞阶段达到顶峰，并形成线粒体区，精细胞早期核内出现膜性泡结构，同时次级溶酶体与高尔基体大量存在，这些细胞器共同形成片层复合体，并参与顶体的形成。
5. In order to investigate the role of mannose receptor ( mr ) of human sperm , the zona free hamster eggs were pre - incubated with purified mr ( pmr ) isolated from motile human sperm by mannose - agarose gel affinity chromatography . the ultrastuctural alteration and cortical granule exocytosis of the eggs were then observed by transmissian electron microscope and tritc - lca immunofluorescence microscope , respectively . the mice were immunized with pmr and the antiserum was raised . after capacitation and induction of the acrosome reaction , the human spermatozoa and oocytes were incubated with the antiserum . then the sperm penetration assay was undertaken
   为了进一步探讨人精于mr在精卵融合中的作用，本文采用改良后的甘露糖-琼脂糖凝胶亲和层析法分离纯化人精子mr ，并将提纯的人精子甘露糖受体( purifiedmannosereceptor , pmr )作用于去透明带的金黄地鼠卵母细胞，运用透射电子显微镜技术和罗丹明偶联的兵豆凝集素( tritc - lca )免疫荧光标记技术观察pmr对卵子的影响。

英文释义

名词

1. a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg

百科释义

The acrosome is an organelle that develops over the anterior half of the head in the spermatozoa (sperm cells) of many animals. It is a cap-like structure derived from the Golgi apparatus.