结论胚胎肢芽内含有较强的促进神经元活性的神经营养活性物质，为神经营养因子提供了新的来源。
Conclusions neurotrophic substances with high activity are present in limb buds, and limb buds may become a new source of neurotrophic factors (NTFs).
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。
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。
Objective To extract and purify neurotropins from limb embryonic buds and study their bioactivity.
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