查询词典 spermatozoa

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。

Pem gene is expressed in a time and stage specific manner. Pem transcripts are detectable as early as day 6 in mouse embryonic development, and are abundant in day 7 and 8, but decrease precipitously thereafter. Although Pem transcripts are not detectable in most of adult tissues, they are present in reproductive system. Furthermore, Pem has also shown to be specifically expressed in the proximal cauda and distal corpus regions of the epididymis, the regions where spermatozoa gain forward motility and fertilization competence.

Pem基因的表达具有明显的时间和空间特异性：在鼠胚发育的第6天，即可检测到Pem转录本的表达；第7-8天，Pem表达量达到最高，随后迅速减少；Pem基因在成年组织中一般不表达，但可在生殖组织表达；另外，Pem特异地在附睾近侧尾部和远侧的体部中表达，此处是精子获得运动性和受精能力的地方。

objective to evaluate effect of lulongshengjing pill on the treatment of oligospermatisma with insuffi-ciency of kidney.methods 100cases with oligospermatism with insufficiency of kidney were treated by lulongshengjing pill.the therapeutic course was three months.testicular fluid routine was carried on every month.changes of testicular flu-id indexes（includes amount,colliquation time,spermatozoa density and motility rate）and procreation were observed before and after treatment.results the total effective rate was91%;cure of56;significant improvement of19;improvement of16and ineffective of9.testicular fluid indexes were significantly improved after treatment compared with those before treatment（p.01）.conclusion lulongshengjing pill was effective on the treatment of oligospermatism with insufficiency of kidney.

目的 观察鹿茸生精丸治疗肾阳虚型少精子症的临床疗效。方法采用鹿茸生精丸治疗肾阳虚型少精子症患者100例，3个月1个疗程，治疗2个疗程，每月查1次精液常规，观察治疗前后精液参数（精液量、液化时间、精子密度、活率及精子形态）的变化及生育情况。结果治愈56例，显效19例，好转16例，无效9例，总有效率91%。治疗前后精液量、精子密度、活率等项指标均有明显改善，与治疗前比较差异有统计学意义（p.01）。结论鹿茸生精丸治疗肾阳虚型少精子症具有良好疗效。

This suggests that the secreted epididymal proteins are transferred to spermatozoa by an unusual mechanism.

这表明附睾来源的分泌蛋白通过不同寻常的机制转移到精子上。

Mammalian spermatozoa go through the process of epididymal maturation to develop their capacity for fertilization.

随着精子在附睾中的转运，它们与卵子质膜的融合能力逐渐增加。

Surface changes in rat spermatozoa during epididymal transit［J］.

羊精子在成熟和获能过程中表面凝集素标记变化［J］。

Our observations suggest that, in addition to motility, the protein phosphatase PP1 gamma 2 might play an isoform-specific function in the development of specialized flagellar structures of mammalian spermatozoa.

我们的观察表明运动性蛋白磷酸酶PP1γ2可能在哺乳动物精子的鞭毛的特异结构的发育过程中具有异构体特异的功能。

Fish spermatozoa are general immotile in the testis and sperm plasma, motility is induced after the discharge of sperm into the aqueous environment.

鱼类精子在精巢和精浆中一般不活动，只有当精子被排到体外并被外界环境的溶液稀释后才能活动。

Objective To evaluate the influence of serum follicle stimulating hormone, luteinizing hormone and testosterone levels to the type of azoospermia and the predictive value of inhibin B level as an indicator of the presence of testicular spermatozoa in patients with nonobstructive azoospermia.

目的 探讨血清促卵泡成熟激素、黄体生成素及睾酮等生殖激素水平对无精子症分型以及血清抑制素B水平对非梗阻性无精子症患者睾丸精子存在与否的预测价值。

The five kinds of male germ cell cytogenetic assays used to detect genotoxicity of ani-mal drugs to each spermatogenetic stage of male germ cells,such as spermatogonia, primary spermatocytes, secondary spermatocytes,spermatids and spermatozoa,had beensystematically studied.

本文系统地研究了适合我国国情的检测兽药对哺乳动物精原细胞、初级精母细胞、次级精母细胞、精细胞和精子等各个发生阶段雄性生殖细胞遗传毒性的5种测定方法，并首次为国产阿维菌素安全性毒理学评价提供了系统的雄性生殖细胞遗传毒性资料。

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。