查询词典 sperm nucleus

Sperm capacitation is an essential mature process before mammalian fertilization. Making sperm capacitated in vitro is an important prerequisite to complete fertilization in vitro.

精子获能是哺乳动物受精前必须经历的一个成熟过程，所以精子的体外获能便是实现体外受精的一个重要前提。

Objective:To study the mechanism of uPA improving sperm capacitation by investigating the effect of uPA on the mitochondrial function of mouse capacitated-sperm in vitro.

目的：检测尿激酶型纤溶酶原激活因子体外对小鼠获能精子线粒体膜电位的影响。

Analysis of ovine sperm capacitation was assessed by different sperm staining types with CTC.The results showed that the percentage of capacitated sheep sperms in each treatment group ...

结果显示，在240 m in和360 m in时，各实验组中获能精子的百分数均明显高于对照组的(P.05)，说明一定浓度的孕酮有利于绵羊精子的体外获能。

In mammals, CRISP-1 inhibits sperm-egg fusion and can suppress sperm capacitation.

在哺乳动物中 CRISP-1抑制精子获能和精卵融合，但其分子机制还不清楚。

We detected the frozen-thawed sperm of 36 Simmental,23 Charolais and 12 Limousin,the results showed that the frozen-thawed sperm of these three breeds could penetrate the zona-free ova of hamster,and formed male pronucleuses.

对36头西门塔尔、23头夏洛来和12头利木赞牛冷冻精子的实验结果表明：三个品种的牛冻精均能穿入去透明带仓鼠卵，并形成发育良好的雄原核。

His work opened the way to intracytoplasmic sperm injection,in which a single sperm is injected directly into the egg cell.

他开创了细胞质内注射的先河，即把一个单精子直接植入一卵细胞内。

Microinjection was used to inject the sperm-like cells into oocytes and enucleate oocytes to observe the development situation of zygotes. Results The proportions of sperm-like cells induced by the three methods were 5.9%,1.6%,0.35% respectively.

但在体外研究SSCs诱导精子的很少，某些雄性性原细胞可以直接分化成精原细胞［6］，这提示具有一少部分雄性性原细胞维持在干细胞状态。

However, the study indicated that the fecundation ability was decreased no matter what cryoprotective mediums and what freezing methods were used, companied with the losing of proteins, changing of proteins expressing quantity and increasing or decreasing of the function and activity in sperm after cryopreservation. Now, the study is altering to exploit the essence of the change of protein structure and function, and elucidate the cryodamage mechanism of sperm cryopreservation, which may provide the basic theory for cryopreservation of boar semen and promote the rapid development of the technique of boar semen cryopreservation.

但研究表明，无论采用何种冷冻保护剂、何种冷冻方法都损害了精子的受精能力，并伴随有蛋白质的丢失、表达量的改变、功能活性的增减等，这种研究现状迫使该领域的研究向充分揭示冷冻对精子损伤的机理方向转移，希望通过揭示冷冻保存所导致的蛋白质结构和功能改变的实质，充分阐明冷冻损伤的机理，为猪精液冷冻保存提供理论依据，并最终促进猪精液冷冻保存技术的快速发展。

Compared with the control group,after ig125 mg/(kg·d sasanqua saponin sterilant for 4 weeks,(92.1%) alive sperm and(52.6%) sperm motility on male mice could be obviously reduced,and(64.0%) gravidity rate and(67.4%) alive embryo on female mice could be significantly decreased.

与生理盐水对照组比较，125 mg/油茶皂素不育剂灌胃给药4周后，可以明显降低雄性小鼠的活精子数(92.1%)和精子活力(52.6%)，可以显著减少雌性小鼠的妊娠率(64.0%)和活胎数(67.4%)。

Compared with the control group, after ig 125mg/ sasanqua saponin sterilant for 4 weeks, 92.1% alive sperm and 52.6% sperm motility on male mice could be obviously reduced, and 64.0% gravidity rate and 67.4% alive embryo on female mice could be significantly decreased.

与生理盐水对照组比较，125mg/油茶皂素不育剂灌胃给药4周后，可以明显降低雄性小鼠的活精子数(92.1%)和精子活力(52.6%)，可以显著减少雌性小鼠的妊娠率(64.0%)和活胎数(67.4%)。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。