精子的

Objective To investigate the relationship between sperm anomalies and chromosomal aberrance and to further understand the pathological changes of anomalous spermatozoa.

目的 探讨精子畸形与精子染色体异常的关系，了解畸形精子的病理学改变。

During spermiogenesis, the most dramatic morphological changes involve formation of the head and the flagellum, condensation of the nucleus, formation of the acrosome, and elimination of excess cytoplasm as the residual body.

成熟精子的顶体位于精子头部，内含有多种水解酶，在精子成熟、获能和受精过程中起着重要作用，因此研究顶体形成为探索控制生育和不育的机理提供了重要线索。

Sertoli cells can provide a material basis and a favorable microenvironment for sperm. After X radiation, spermatogenic cells and mitochondrion dramatically swelling and lysis with a decrease of mitochondrial cristae, with the prolonging of time, the mitochondria damage get even worse, mitochondrial crista is disappeared.

Sertoli细胞在精子发生过程中可为精子发生提供物质基础和能力，为精子发生提供有利的微环境，对精子的生成有复杂的作用。X射线照射后即出现生精细胞和支持细胞线粒体明显肿胀，线粒体嵴减少，且随着时间延长，线粒体形态的损害进一步加重，线粒体数量减少，线粒体嵴消失。

Flow-.cytometrically sorting the X-.and Y-.chromosome bearing sperm based on the measurement of sperm DNA is an effective way to preselect the sex of the mammalian offspring.

以X精子争Y精子的DNA含量差别为基础的流式细胞仪分离精子技术是有效的哺乳动物性别控制方法。

Spermatheca which stores sperms exists in the female body of Oxya chinesis. Sperms can live 2-3 months in it. In order to study the mechanism of living sperms in the spermatheca, the structure of the spermatheca is investigated by light microscope and electron microscope respectfully. The results show that the spermatheca consists of six layers. From outer to inner, they are: peritoneal membrane, muscular layer, connective tissue, ground membrane, epithelial layer and inner membrane.

中华稻蝗雌体内存在可以储存精子的受精囊，精子在其内可以存活2—3个月，为进一步研究精子在受精囊内存活的机制，在光镜与电镜水平上分别研究了受精囊的结构，结果表明受精囊由外向内可分六个层次：围脏膜、肌肉层、结缔组织、基膜、上皮层和内膜层。

Methods Male infertility couples from October 2006 to July 2008 were chosen and divided into ICSI group and TESA+ICSI group. ICSI group were 584 oligozoospermia cases with alive normal sperm in spermatic fluid. TESA+ICSI group were 54 obstructive azoospermia cases with alive normal sperm in testicle. Two groups were treated with ICSI after wives obtained oocytes by ovarian stimulation.

选择2006年10月～2008年7月因男性不孕症夫妇行ICSI治疗的患者638例分成两组，ICSI组和TESA+ICSI组，ICSI组为自行排精后精液内可以找到正常形态活精子的少精症患者行ICSI治疗584例，TESA+ICSI组为梗阻性无精子症患者经睾丸穿刺找到睾丸内形态正常活精子行ICSI治疗共54例，两组女方均给予超促排卵用药获取卵母细胞。

Polyandrous females are hypothesized to gain genetic benefits for their offspring, but this assumes paternity bias favoring male genotypes that enhance offspring viability.

这种效应可能源自该精子本身在与其它精子的竞争中胜出，或是该雌性动物给予该精子接触卵子的优先权等方法。

Cervical mucus, semen consistency pilot test of time in the prediction of ovulation election period, a drop of glass on the first and fresh semen, cervical mucus and then take a drop of semen on the next, distance 2,3 mm, not to coverslip pressure to hand light light rock slide, so that two drops of liquid close to each other, under the microscope to observe sperm penetration capacity, such as the sperm can move through the mucus and to continue to run that sperm motility and cervical mucus of the characters are normal, mucus-free anti - sperm antibodies.

宫颈粘液、精液相合试验试验时间选在预测的排卵期，在玻璃片上先放一滴新鲜精液，然后取子宫颈粘液一滴放在精液的旁边，距离2、3mm，不要盖玻片加压，以手轻轻摇动玻片，使两滴液体互相接近，在显微镜下观察精子的穿透能力，如精子能穿过粘液并继续向前运行，表示精子活动力及宫颈粘液的性状都正常，粘液中无抗精子抗体。

These studies demonstrate that the more abundant D form interacts with spermatozoa transiently, possibly with a specific receptor on the sperm surface, consistent with a capacitation-suppressing function during sperm transit and storage in the epididymis, and also confirm a tightly bound population of the E form that could act in the female reproductive tract.

研究证明在附睾中运输和储藏期间，大量的D型CRISP-1与精子瞬时的结合与精子的抑制获能功能相关。D型CRISP-1可能与精子表面的受体相结合。同时也证明了E型CRISP-1与精子的紧密地结合模式可能在雌性生殖道中发挥作用

These studies demonstrate that the more abundant D form interacts with spermatozoa transiently, possibly with a specific receptor on the sperm surface, consistent with a capacitation-suppressing function during sperm transit and storage in the epididymis, and also confirm a tightly bound population of the E form that could act in the female reproductive tract.

研究证明在附睾中运输和储藏期间，大量的D型CRISP-1与精子瞬时的结合与精子的抑制获能功能相关。D型CRISP-1可能与精子表面的受体相结合。同时也证明了E型CRISP-1与精子的紧密地结合模式可能在雌性生殖道中发挥作用→如果您认为本词条还有待完善，请编辑词条

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。