动物细胞

Vaccinia virus belongs to the poxvirus family and has a double-stranded DNA genome of 192Kb in size. VV contains an envelope and replicates in cytoplasm of the infected cells. VV has a wide host range and infects various mammalian cell lines as well as animals.

牛痘病毒(Vaccinia virus， VV)属於痘病毒科中一拥有192kb双股DNA遗传物质的病毒，会在细胞质中繁殖出具有鞘膜的病毒，进而感染其他不同种的哺乳动物细胞和动物个体。

The body will take place physiological and biochemical changes,the impact on oocytes quality is in need of study.

死后动物机体会发生一系列生理生化变化，这些变化对卵母细胞质量的影响有待研究。

The present paper report the karyotype of four nemerteans and nuclear DNA content s of eight nemerteans.

本文研究了4种纽虫的核型和8种纽虫的核DNA 含量，为纽形动物的细胞遗传学研究提供参考。

Exposure to genistein, an estrogen, before puberty causes mammary gland differentiation.

青春期前服用雌激素染料木素可导致乳腺分化，&分化的细胞很少增殖，因而很少发生癌变；然而，如果已经患有雌激素反应肿瘤的动物服用雌激素，则刺激肿瘤的生长。&

Methods All mice in the experimental groups were immunosuppressed by given different concentrations of dexamethasone phosphate added in drinking water throughout the experiment. The recovery and purity of the oocysts obtained using different purification methods was compared. The infectivity of the oocysts obtained from the same origin but different animals and different purification methods in a bovine fallopian tube epithelial cell culture system was studied.

在饮水中添加不同浓度的地塞米松对人工感染小鼠进行免疫抑制，探讨获得最多卵囊数的药物添加量；比较不同纯化方法得到的卵囊回收率和纯度；探讨来自不同动物、不同纯化方法的卵囊在牛输卵管上皮细胞培养系统的感染情况。

After the animal modle done successfully, all animals were randomly divided into two groups. group l: Microbubble contrast agent containing plasmid was injected into nude mice via the tail vein; group 2: the mixture of microbubbles with plasmid was injected as the group 1, and eyeballs were exposed to ultrasound with intensity of 0.5W/cm^2 immediately, and the time were all 60s that working time control at 20%.

将12只BAlB/C裸小鼠双眼玻璃体腔接种HXO-Rb44细胞，造模成功后，将动物随机分为2组，第1组于尾静脉注入含质粒的微泡造影剂；第2组尾静脉注射质粒与微泡的混合液，并立即以0.5W/平方公分〔1〕的超声波辐照小鼠眼球60s，工作时间控制为20%。

Methods In the study,experimental animals were divided into three groups. Thiamazole was used to replicate the model of maternal pregnant hypothyroidism. The infant rats were innate hypothyroidism. T4 substitution group rats were administrated with T4 from postnatal 0 day as well as the same days normal neonatal rats as control. TdT-mediated dUTP nick end labeling was carried out to detect the positive cells of PCD in cortex and hippocampus of postnatal 7,14 and 21 days rats. Immunohistochemical staining technique was employed to detect Bcl-2 and Bax proteins in relevant sections. Experimental data were statistically analysed by One-Way ANOVA, SNK-q test and Spearman rank correlation analysis.

本研究实验动物分为三组，采用甲巯咪唑复制甲状腺功能减退孕鼠模型，出生后仔鼠为先天甲减鼠，T4替代组于仔鼠出生后即日起腹腔注射T4，剂量为20μg∕，同时设一正常对照组；应用原位末端标记方法检测出生后7、14、21d仔鼠大脑皮层、海马PCD阳性细胞，并应用免疫组化SP法检测相应部位Bcl-2及Bax蛋白；用单因素方差分析（One-Way ANOVA）、SNK-q检验及Spearman等级相关分析进行统计处理。

What genetic change allowed multicellular animals to come into existence remains obscure. But Volvox shows the sort of thing to look for: a gene that stops reproduction in single-celled creatures and has been co-opted to do a new job.

究竟是什么样的遗传学变化使多细胞动物来到这个世界上仍是一个谜，但团藻为人们指出了一条路：一个阻止单细胞生物繁殖并指派给它另一个工作的基因。

In addition, there have no enough studies in the mechanism of spermatogenesis arrest induced by heat, and also there are many negative effects in the male contraceptive methods during these years like surgical ligation of vas deferens. All these factors have brings researchers to found a safety and efficacy methods for the problems in male reproduction.

因此，本研究通过高温处理未成年动物的模型，从细胞及分子水平探讨高温作用后生精功能障碍的机理，并对高温引起不育的机制进行深入研究；这些研究对阻止、延缓或减弱上述因素对人类生育能力的损害有重要意义，同时也为临床治疗一些男性不育、指导未成年男性生殖保健和探索男性避孕措施的研究提供理论基础。

More importantly,biotechnologists for the first time was able to manipulate the genes of cells from some animals directly before growing them into embryos.

更为重要的是，生物技术第一次可以用来直接控制某些动物胚胎形成前的细胞基因。

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。