精子的

Further investigation will potentially provide the practical technologies for the diagnosis of human acrosome reaction deficiency

孕酮具有促进人精子受透明带诱导顶体反应的作用；小鼠透明带溶解液具有诱导人精子产生顶体反应的效果并确定了mZPS诱导人精子顶体反应的量效关系，为建立人顶体反应缺陷症的实用诊断技术提供基础。

Some sperm with damaged DNA may escape from the sperm surveillance mechanism and transmit the damage to the offspring.So research on the damage to sperm DNA has become one of the hot spots in reproductive medicine.

替代组蛋白成为精核蛋白的鱼精蛋白和大量的二硫键使精子染色体高度压缩，这种特化的结构可以保护精子DNA免受伤害，因此成熟精子对各种致病因素有较强的抵抗力。

In human spermatozoa, the positive immunofluorescent staining of centrin protein was seen to be located in the basal body of flagellum and clearly in proximal and distal centrioles.

健康男性精子中Centrin免疫荧光阳性，位于鞭毛的基体部，显示近端和远端中心粒，而Cenexin只在一个中心粒上有明显阳性染色，表明该蛋白是人成熟精子中心体的一种重要结构成分。这一结果显示了人和啮齿目动物精子中心体的差异。

According to the change of chromatin and morphology of cells, the spermatogenesis could be divided into five stages: spermatogonium, primary spermatocyte,secondary spermatocyte, spermatid and spermatozoon.

利用透射电镜观察秀丽白虾的精子发生，并根据染色质及细胞形态的变化将精子发生的全过程划分为五个时期，即精原细胞、初级精母细胞、次级精母细胞、精细胞和精子。

In present study, we found that Cipangopaludina chinensis has two kinds of sperm, one is the viable typical sperm, and the other is the unviable atypical sperm.

结果表明：中国圆田螺的精子具有双态现象，即既有可育的典型精子，又有不育的异型精子。

Wapiti sperm capacitation in vitro and its ultrastructural change were studied in order to choose a set of perfect and feasible protocol of wapiti sperm capacitation in vitro, and to provide a basis data on the research of wapiti capatitation in vitro and the mechanism of fertilization.

本研究以马鹿为试验对象，开展了对鹿精子体外获能以及获能前后精子超微结构变化的研究，以期筛选出在实践中具有可操作性且效果良好的马鹿精子获能培养体系，从而为鹿体外受精和受精机理的研究奠定基础。

It has been reported that gestational and lactational exposure to estrogens or androgen antagonists reduced testicular size and sperm production, germ cell apoptosis, male infertility, and male reproductive tract malformations, such as cryptorchidism, hypospadias, nipple retention, or reduced anogenital distance.

但本实验结果显示，大鼠孕期和哺乳期接触达母体中毒剂量的硫丹，对雄性子鼠的睾丸重量、每日精子生成量、附睾精子数和精子形态、睾丸生殖细胞凋亡发生率等都没有明显的影响，也未见雄性子鼠AGD缩短、乳头残留及隐睾和尿道下裂等雌性化表现。

Apoptosis plays a pivotal role in the spermatogenesis.Disequilibrium of apoptosis in germ cells is one of the reasons for azoospermia.

生精过程中细胞凋亡过程对维持正常的精子生成至关重要，该过程的失衡是导致少精子无精子症的重要机制之一，已受到广泛关注。

A series of technologies were established and applied to this study, which include MR electron microscopy by using mannosylated albumin-colloidal gold (DMA-G10) as probe, modified CBB method for acrosome reaction detecting, improved model of human acrosome reaction induced by mZPS (solubilized mouse zona pellucida), in vitro heterogenic fertilization and affinity cytochemistry, preparation and purification of proteins.

本研究建立了MR的电子显微镜探针——甘露糖基化白蛋白-胶体金及其检测法、移植建立了人精子顶体反应的CBB检测法、改良了mZPS诱导人精子顶体反应实验模型，同时运用体外获能、异种体外受精、亲和细胞化学、蛋白质提纯制备等技术与实验模型，对人精子MR的表达、定位和生理功能加以探讨。

Solen grandis was longer than Solen strictus. The nuclear of Solen grandis was warhead-shaped while one of Solen strictus's was spherical. A satellite body was found in Solen grandis but not in Solen strictus. In addition, Solen grandis had a longer tail than Solen strictus.

大竹蛏的顶体比长竹蛏的稍长；大竹蛏精子核形似子弹头而长竹蛏精子核形为圆球状；大竹蛏有卫星体结构而长竹蛏无卫星体结构；大竹蛏精子尾部鞭毛比长竹蛏的长。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。