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We also suceeded in culturing 615 ES cell colonies by BRL conditioned medium. 615小鼠的ES细胞集落。采用BRL条件培养基对分离的615小鼠ES细胞
Chimeras were made by injecting the ES cells into C57BL/6J blastocysts,and the germline compositions of the chimeras were detected by mating them with albino ICR mice. 通过囊胚显微注射法，将ES细胞注入C57BL/6J胚胎中，制作了嵌合体，并通过对嵌合体后代毛色的观察，判断了嵌合体生殖细胞的组成。
Nonhuman primates were phylogenetic closeness to human being and its ES cell lines are very similar to human. 非人灵长类作为与人类亲缘关系最密切的动物,其ES细胞与人类十分接近。
The results indicated that ES cell line MESPU21 and MESPU22 were both highly germline-competent. 结果表明，ES细胞系MESPU21、MESPU22都具有很强的种系嵌合能力。
The isolation and differentiation of human ES cell lines can provide us a new insight into regenerative medicine. 人ES细胞株的建立和分化研究是再生医学中一个全新且极具价值的领域。
Howeer, uniparental ES cell research faces the biological hurdle of genomic imprinting, in which specific gene expression patterns are dictated by the parental origin. 然而，单系胚胎干细胞研究面临着基因组印迹的生物学障碍，即特殊的基因表达模式受原始亲代的控制。
The Korean team announced this past February that they had created a human embryo through SCNT, grew it into a blastocyst and derived a pluripotent ES cell line. 这支韩国研究团队在今年2月时宣布，他们利用SCNT制造了人类胚胎，并将它培养至囊胚期，然后从中培植出一支具多能性的胚胎干细胞株。
Given much promising experimental evidence in animals, therapeutic trials of human ES cell derivatives in neurodegenerative disease are probably imminent. 而治疗神经退化疾病的动物实验，也有令人满意的成果。相信利用人类胚胎干细胞衍生细胞的试验，也为期不远。
ES cells are pluripotent cells derived from pre - implanted embryos. ES细胞是由着床前胚胎中分离获得的胚胎多能干细胞。
Chimera of mouse ES cells and tetraploid embryos 小鼠胚胎干细胞与四倍体胚胎的嵌合
There were no difference pregnancy rate and farrowing rate between separate ES cells and cell mass constructed embryos. 其中514枚囊胚注射消化成单个的ES细胞，另412枚囊胚注射ES细胞团块。
Not only did the Cambridge group help uncoer the new stem cell, they were the first to obtain ES cells from rat embryos. 不仅仅是剑桥的研究小组帮助发现了这新的干细胞，他们是最先从大鼠的胚胎得到胚胎干细胞。
ES cells' pluripotency, however, makes this far too dangerous an approach for human therapy. 不过，由于胚胎干细胞的多能性，使得这种方法太危险，不适用于人体治疗。
Even so, from hundreds of eggs the effort yielded only a single ES cell line, and the researchers have said that they are not certain which of their methods was responsible for that success. 如果要重设卵子的发展，还有很多神秘机制需要了解；
Conditional medium improving obtainment of mouse embryonic stem cell chimeras 条件培养液改进小鼠胚胎干细胞嵌合体制备效率的观察
One issue in using uniparental ES cells for tissue transplants is their durability and safety. 使用单系胚胎干细胞进行组织移植中的问题便是其耐用性和安全性。
Conclusion The ES cells can grow well and maintain in the state of undifferentiation under the conditions. 结论：胚胎干细胞能良好生长，且保持未分化状态。
In their current paper, Dr.McLaughlin and colleagues tested the functionality of uniparental ES cells in adult tissues. 在他们最近的文章中，McLaughlin博士和同事测试了单系胚胎干细胞在成熟个体组织中的功能性。
One might speculate whether it is feasible to derive neural cell cultures from ES cells exhibiting stem cell properties, that is ,continuous expansion by symmetrical division. 人们可以推测从表现干细胞特征（即可以通过对称分裂持续扩增）的神经细胞培养物中得到ES细胞是否可行。
One might speculate whether it is feasible to derie neural cell cultures from ES cells exhibiting stem cell properties, that is ,continuous expansion by symmetrical diision. 人们可以推测从表现干细胞特征（即可以通过对称分裂持续扩增）的神经细胞培养物中得到ES细胞是否可行。