目的以体外培养表皮干细胞（ESC）为实验平台，观察感觉神经肽P物质（SP）在ESC分化中的作用。

Objective To investigate the effect of sensory neuropeptide substance P(SP) on the differentiation of cultured epidermal stem cells (ESC) in vitro, with in vitro cultured ESC as the platform.

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目的探讨以es细胞源表皮样干细胞构建组织工程皮肤的方法，为构建新的组织工程皮肤奠定基础。

To investigate the methods of constructing tissue engineering skin by ES-derived epidermal-like stem cells and collagen sponge, and to lay a basis for seeking new tissue engineering skin.

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