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

• 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。