OBJECTIVE: Embryonic stem cells (ESCs) have a strong plasticity, but only can extract from embryos. Limited sources intensify research resistance.

目的：胚胎干细胞可塑性强，但只能从胚胎中提取，来源受限使研究阻力加大。

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They are very small in size, and share the same features of embryonic stem cells (ESCs).

他们是非常小的规模，并分享胚胎干细胞(esc)相同的功能。

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A potential solution may rest with embryonic stem cells (ESCs), which have a potential to grow indefinitely and differentiate into a variety of cell types in vitro.

胚胎干细胞具分化潜能，能在体外分化为多种细胞类型，是一种可能的解决方案。

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First, federal judge Royce Lamberth surprised everyone on August 23 by calling a halt to all federally-funded work on embryonic stem cells (ESCs).

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