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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These neural stem cells could be induced to differentiate into cholinergic neurons by using embryonic chick skeletal muscle extract.

在加有鸡胚骨骼肌提取液的培养基诱导下，能向胆碱能神经元方向分化。

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Objective To extract and purify neurotropins from limb embryonic buds and study their bioactivity.

目的 研究从胚胎肢芽内提取和纯化具有神经营养活性的物质。

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