顶体

By combining with the author's own research work, the progresses of study on sperm egg identification, acrosomal reaction, cortical reaction, and formation of male and female pronucleus in decapod crustacean are reviewed in the paper.

结合作者近期的研究工作，从精卵识别、顶体反应、皮层反应、雌雄原核的形成和结合等方面综述了近年来十足类甲壳动物受精细胞学方面的研究成果，并展望了这一领域的研究与应用前景。

Objective: To explore the relationship between the acrosome enzyme, hyaluronidase, acid phosphatase,γ- glutamyltransferase in human semen and male infertility.

目的探讨人精液中顶体酶、明质酸酶、性磷酸酶、γ谷氨酰基移换酶与男性不育的关系。

PH-20 is a traditional sperm membrane antigen,and it is a glycophosphatidylinositolanchored hyaluronidase.

PH-20(posterior head 20)作为传统的精子膜抗原，是由磷脂酰肌醇(glycophosphatidylinositol，GPI)锚定的膜结合型透明质酸酶，最适PH值呈中性，它分布于精子表面浆膜和顶体内膜，是一种透明质酸酶诱导信号转导的受体和识别透明带的受体。

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。

Annexin A1 mainly distributed in nuclei of spermatogonia, acrosomal cap of spermatid and residual body of sperm.

免疫组织化学显示膜联蛋白A1主要分布于精原细胞核、精子细胞顶体帽及精子胞质残余体内。

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。

Spermiogenesis is a crucial process for germ cell formation, which ensures the efficient transmission of the paternal genome by the spermatozoa to the ooctyte at fertilization.

它包括染色质的压缩、顶体和鞭毛的形成以及去除多余的细胞质，是精子发生的一个重要环节，确保了成熟精子具有正确的形态和完整的功能。

Methods Semen samples were collected from 278 infertile men. WBC in semen was detected through WBC count by microscope.Sperm morphology was evaluated using artificially modified method by Automa ted Sperm Morphology Analyzer.Acrosomal morphology was analysed with modified P apanicolaou staining.

对278例不育患者采用精子形态检测系统下人工修正方法进行精子形态分析，采用精液白细胞计数法检测精液白细胞，采用改良巴氏染色法分析精子顶体形态。

Objective: To study the oxidation damage of active oxygen to human sperm acrosome and ultrastructure,and study the function mechanism about Cuscuta japonica treating male's infertility and asthenoospermia.

中文摘要：目的：观察菟丝子水提物对活性氧所致人精子顶体和超微结构的氧化损伤的保护作用，探讨菟丝子治疗男性不育弱精子症的作用机制。

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。