据报道，ES细胞目前已有在体外培养两年，连续传代达450次以上，而胚胎生殖干细胞传代次数最多可达70~80次。
According to reports, ESC culture in vitro was more than two years and attained 450 serial passages. Embryonic germline ESC attained 70~80 passages at most.
“我想这是令人难以置信的，”加利福尼亚大学妇产和生殖学教授、干细胞科学家SusanFisher博士说。
"I think it's incredibly exciting," says Dr. Susan Fisher, a stem cell scientist and a professor of obstetrics, gynecology and reproductive science at University of California SAN Francisco.
使用干细胞技术，由richardr. Berhringer博士带领的德克萨斯州M.D.A nderson肿瘤中心的生殖科学家们利用两只公鼠成功繁殖出雌性和雄性老鼠后代。
Using stem cell technology, reproductive scientists in Texas, led by Dr. Richard r. Berhringer at the M.D. Anderson Cancer Center, have produced male and female mice from two fathers.
目的从牛原始生殖细胞中分离克隆牛胚胎干细胞。
Objective:To isolate and clone bovine embryonic stem cells from bovine fetus Primordial germ cells(PGCs).
本文就近年来胚胎干细胞和精原干细胞在男性生殖中的研究进展作一介绍。
This article reviews recent advances in studies of the use of embryonic stem cells and spermatogonial stem cells in male reproduction.
但是，他们可以产生“单系”胚胎干细胞系，带有母系的两组染色体的单系胚胎被称为单性生殖。
They can, however, generate "uniparental" embryonic stem cell lines. Uniparental embryos with two maternal sets of chromosomes are known as parthenogenetic.
从这个角度来说，生殖细胞是物种的干细胞，它能够产生一个新个体而不仅仅是发育为一个器官。
In this sense, germ cells are mother cells of all stem cells, since they produce new organisms rather than organs.
胚胎干细胞是来源于附植前胚胎的内细胞团或附植后胎儿的原始生殖细胞具有发育全能性的细胞。
Embryonic stem cell is a kind of undifferentiated pluripotent stem cell, which stems from pr Eimplantation ICM or early fetus primordial germ cell.
胚胎干细胞是来源于附植前胚胎的内细胞团或附植后胎儿的原始生殖细胞具有发育全能性的细胞。
Embryonic stem cell is a kind of undifferentiated pluripotent stem cell, which stems from pr Eimplantation ICM or early fetus primordial germ cell.
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