色素上皮衍生因子(PEDF)是一种多能神经营养因子，在中枢神经系统和视网膜中均具有很强的活性。

Pigment epithelium-derived factor (PEDF) is a multi potent neurotrophic factor with potent activity both in the central nervous system and in the retina.

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目的：研究视网膜发育过程中血管内皮生长因子（VEGF）和色素上皮衍生因子（PEDF）所起的调节作用及其机制。

Objective:To determine the role of vascular endothelial growth factor(VEGF)and pigment epithelium derived factor(PEDF)in vascularization of the developing retina.

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血管内皮生长因子和色素上皮细胞衍生因子是目前发现的作用最强的角膜新生血管形成促进因子和抑制因子。

Vascular endothelial growth factor and pigment epithelium-derived factor are most enhancing factor and strongest inhibitory factor of corneal neovascularization(CNV)at present.

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血管内皮生长因子和色素上皮细胞衍生因子是目前发现的作用最强的角膜新生血管形成促进因子和抑制因子。

Vascular endothelial growth factor and pigment epithelium-derived factor are most enhancing factor and strongest inhibitory factor of corneal neovascularization(CNV)at present.

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