查询词典 pronuclei

FISH revealed that HBV DNA-positive signals were presented in the oocyte chromosomes, female pronuclei of the zygotes and each nucleus of 2-cell embryos.

用最后几次洗液进行斑点杂交未发现HBV DNA阳性信号，排除了PCR和Southern阳性结果来自洗液污染的可能性。

Construction of heavy chain transgenic mice and genome type analysis Linearized transgene plasmids were microinjected into pronuclei of zygotes from CBA×C57BL/6 mice, and transplamted into oviduct of pseudo-pregnant mice.

二、抗体重链转基因小鼠建立及基因型分析将线性化的质粒显微注射入CBA×C57BL/6小鼠的受精卵细胞的雄前核内，然后导入假孕雌鼠的输卵管。

This fragment, which consists of the chicken-alpha globin gene (5′-MAR)、mouse-metallothionein-Ⅰ and human insulin-like growth factor-Ⅰ, was microinjected into male pronuclei of 468 rabbit 1-cell embryos, and injected embryos were transferred into the oviduct of 36 recipients.

为了检测转基因的表达，我们用〓标记的hIGF-1作标记抗原，hIGF-1作标准抗原与hIGF-1抗血清（美国的Susan和Underwood提供）进行竞争性免疫结合反应〓首次建立了人胰岛素样生长因子（IGF-1）的放射免疫测定方法。

In conclusions,(1) The pronuclear formation was asynchronous after ICSI in buffalo, the female pronuclear formed 3 hours earlier than male pronuclei;(2) After ICSI and activation, Culture of oocytes in 1.9mmol/L 6-DMAP for 3 hours can improve their subsequent embryonic development;(3) Treatment of sperm with 5mmol/L DTT can promote sperm decondensation;(4) Dead sperms can be used for ICSI in buffaloes;(5) Treatment of sperm with GSH can improve the efficiency of ICSI in buffaloes.

以上结果表明：(1)水牛精子胞质内显微受精的雌、雄原核发育不同步，雌原核比雄原核早3h形成；(2)水牛卵母细胞ICSI和激活后用1.9mmol／L 6-DMAP培养处理3h能提高其胚胎发育率；(3)DTT预处理水牛精子能提高其ICSI后的精子解聚率；(4)死精子能用于水牛卵母细胞的ICSI；(5)GSH预处理水牛精子有助于提高其ICSI后的囊胚发育率。

Resembled to control oocytes, MAPK was inactivated after cytoplasts activation. However, after activation the cytoplasts showed fragmentation while pronuclei were formed in the control oocytes. This indicated that nuclei play important role in maintainence of oocytes normal morphology.

成熟胞质的活化与卵母细胞相似，在活化后MAPK被迅速灭活，只是胞质在活化处理后均发生碎裂，而卵母细胞活化后形成原核，这表明核在细胞形态维持中起重要作用。

The 4.4 kb or 2.7 kb of 5'-flanking region of the human CYP11A1 gene was fused to the Cre recombinase and the transgenes were injected to the ROSA26 heterozygote pronuclei by microinjection.

为了了解CYP11A1基因的转录调控，我们利用SCC-Cre/R26R动物模式，建立了SCC-iCre暂时性基因转殖小鼠，探讨CYP11A1启动子在脑内的表现活性。

In the present study, we collected cumulus cells oocyte complex from ovaries of two different strain mice. The cumulusenclosed oocytes were cultured for 6 h in MEM supplemented with growth factor and FSH. The meiotic maturation of these oocytes has progressed to pro-metaphse Ⅰ stage and the condensed chromosomes are visible under DIC microscope, metaphase Ⅰ spindle even can be detected under Polscope. The metaphase Ⅰ spindles of oocytes were exchanged under such microscopes. After electric stimuli, 91. 6% and 91. 6% karyoplasts-cytoplasm pairs were fused respectively. The resulting oocytes were cultured further in MEM and over 80% of oocytes released the first polar body. 79% and 77% of oocytes formed two pronuclei after in vitro fertilization and the embryos were cultured in KSOM supplemented with amino acids. Over 60% of embryos developed to blastocyst stage.

在本研究中我们在取得两种不同品系小鼠的卵丘卵母细胞复合体后，先将卵丘卵母细胞复合体置于含有多种生长因子和激素的MEM培养液中培养6小时，此时卵母细胞已进入第一次减数分裂的前中期，并且在DIC倒置显微镜下可以看到浓缩的染色体，用Polscope可以发现明显的纺锤体，借助这种显微镜通过显微操作将两种不同品系小鼠来源的卵母细胞的MI纺锤体进行互换，经过三次直流电脉冲作用后，分别有91.6％的胞质—MI核质体对融合，经过进一步的培养后，超过80％的重组卵母细胞排出第一极体，体外受精后分别有79％和77％的重组卵形成双原核，受精后的胚胎在KSOM胚胎培养液中体外培养4天后，超过60％的胚胎发育至囊胚。

Most sperm nuclei eventually developed into the male pronuclei, just like the normal sperms, except sperm nuclei in a few zygotes kept dense throughout the fertilization process. Dense chromosome body was seen at the nuclear area during the prophase of first mitosis, and in the middle of spindle at metaphase of first mitosis.

精子入卵后形成精核，大多能够逐渐解凝、液化并膨大，最终形成形态正常的雄性原核，但在第一次卵裂早期退化成浓缩的染色质小体，并在胞质分裂时随机地分配到其中一个子细胞里的分裂沟附近。

This study was conducted to clone the sheepβ-lactoglobulin gene and the human myelomonocytic surface differentiation antigen CD14 gene (hCD14) by PCR, and this two gene were fused to construct oBLG-hCD14 fuse gene, this fuse gene were microinjected into pronuclei of mouse eggs to produce transgenic mouse.

本研究拟利用PCR和分子克隆技术，首先获得绵羊β-乳球蛋白基因调控序列片段和人CD14基因（hCD14）全程编码序列，并构建oBLG-hCD14融合基因，最后利用微量注射法将融合基因导入小鼠受精卵以产生转基因小鼠。

Oocyte samples from one group were collected to detect the presence and integration of HBV DNA within cells and chromosomes using PCR, Southern blot, dot hybridization and fluorescence in situ hybridization. The female animals from another group were mated with their normal males, respectively. Their zygotes, 2-cell embryos were collected to detect the integration of HBV DNA in the female pronuclei of zygotes and the replication and expression of HBV genes in the 2-cell embryos using FISH, RT-PCR and immunofluoresence assay.(1) PCR detected positive bands in the tested oocyte samples fromgoldon hamster and mice. Southern blot revealed clear hybridization signals in PCR products.

研究用金黄地鼠和小鼠建立实验动物模型：将卵巢内注射HBV DNA的实验动物分成两组，一组注射后进行超排卵，收集卵巢和输卵管的卵母细胞，用PCR、Southern杂交，斑点杂交和荧光原位杂交(fluorescence in situ hybridization、FISH)检测HBV在卵母细胞内的存在和染色体上的整合；另一组超排雌鼠与正常雄鼠合笼，收集受精卵和2-细胞胚，用FISH、RT-PCR和免疫荧光检测技术分别研究HBV基因在受精卵雌原核上的整合以及在2-细胞胚中的复制与表达。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐