方法：制备人牙齿发育各阶段标本，进行神经生长因子及其受体的免疫组化研究。

Methods: After preparing specimens of every stage of human developing teeth, immunohistochemical staining of nerve growth factor and its receptor was carried on.

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目的：综述神经生长因子及其P 75受体与细胞凋亡的关系。

Objective: to sum up the new development on relationship between nerve growth factor and its P75 receptor and apoptosis.

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目的：研究神经生长因子受体（P75NGFR）在先天性巨结肠（HD）中的分布及其与HD发生的关系。

Objective: To investigate the distribution of Nerve Growth Factor Receptor (P75NGFR) in Hirschsprung's disease (HD) and the relationship between P75NGFR and HD.

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目的：研究神经生长因子受体（P75NGFR）在先天性巨结肠（HD）中的分布及其与HD发生的关系。

Objective: To investigate the distribution of Nerve Growth Factor Receptor (P75NGFR) in Hirschsprung's disease (HD) and the relationship between P75NGFR and HD.

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