医学 >>> 性科学 >>> 性生物学 性生理学 性心理学 性医学 性社会学 性伦理学 性教育
搜索结果: 61-75 共查到性科学 sperm相关记录416条 . 查询时间(0.114 秒)
Treatment of mice with high doses of radiation or certain cytotoxic drugs results in killing of spermatogonial stem cells, a prolonged period of reduced sperm production, and infertility. In this ...
Treatment of mice with high doses of radiation or certain cytotoxic drugs results in killing of spermatogonial stem cells, a prolonged period of reduced sperm production, and infertility. In this ...
Two methods were used to assess the ability of plasma membrane (PM) polypeptides to bind to isolated zonae pellucidae (ZP). Crossed immunoelectrophoresis patterns of detergent solubilized PM were co...
The reproductive system of male obese Zucker rats was studied to determine whether there are abnormalities in testis composition, organ weights, or sperm motility, which might contribute to their se...
The surgical technique employed for construction of bilateral vas-to-bladder fistulae (vasocystostomy) in the male rabbit is described. The method of collection and results of examination of sperm...
Several reports have suggested that human semen quality has declined throughout the world over the last few decades. Chemicals in the environment acting as endocrine disrupters have been implicated ...
Recently, there is increasing evidence suggesting that oxidative sperm DNA damage is closely associated with impaired sperm function and male infertility. 8-Hydroxydeoxyguanosine (8-OHdG) is consi...
Prosaposin is a well-characterized, approximately 68-kDa protein found in many tissues and as a normal component of human semen. A fragment of prosaposin apparently is involved in primary sperm-eg...
Annually, >1.3 million men are members of couples seeking help because of infertility. Semen from many of these men contains reasonable numbers of motile and normal sperm, but for a subset of indivi...
The c-met receptor is a p190MET tyrosine kinase proto-oncoprotein that through its binding to its ligand, designated hepatocyte growth factor (HGF), induces mitogenic, motogenic, and morphogenic act...
The aim of this study was to investigate whether the dog sperm acrosome reaction can be induced by progesterone and whether the action of progesterone is mediated by binding of progesterone to a r...
The objective of this study was to determine the amount of germ cell degeneration throughout spermatogenesis in the bull and to determine if gossypol-enriched diets enhance that degeneration. Twenty...
Sperm binding to the oocyte plasmalemma is crucial to subsequent steps in fertilization. However, the usual in vitro assay for sperm-oocyte binding does not distinguish between nonspecific attachmen...
Formation of a prefertilization sperm reservoir in mammals is thought to occur via sperm cell attachment to fallopian tube or oviduct epithelial cells (OEC). Recent data suggests that such an interact...
The fibrous sheath (FS) is a cytoskeletal structure that encases the axoneme in the principal piece of the spermatozoon tail. In the rat, it is composed of several proteins, of which a 75-kDa polype...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...