They can, however, generate "uniparental" embryonic stem cell lines. Uniparental embryos with two maternal sets of chromosomes are known as parthenogenetic.

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。

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In 2001 George Bush issued a ban on federal funding of research on new embryonic stem-cell lines-a compromise that meant that scientists could only work with cells from the batches they already had.

2001年，乔治·布什颁发命令，禁止联邦资金支持新胚胎干细胞株的研究，这实际上是一种妥协，意味着科学家们只能对业已产生的胚胎干细胞进行研究。

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For utilization of the mouse embryonic stem (es) cells for various purposes, it is desirable that the cell lines are established from various sources such as inbred and outbred mouse strains.

为了充分利用小鼠胚胎干(es)细胞，就必须从众多小鼠品系中分离es细胞系。

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A. Non-embryonic stem cell lines involve cells that are more differentiated and thus less capable of being programmed into various cell lines.

CNN: Dr. Sanjay Gupta: Understanding stem cell research

Why not do this research with non-embryonic stem cell lines?

CNN: Dr. Sanjay Gupta: Understanding stem cell research

Doerflinger said his group is in favor of federal funding of research on non-embryonic stem cell lines, using adult tissue, or tissue from fetuses which died of natural causes.

CNN: Bush said to be 'struggling' with stem cell decision