多肽生长因子与胎肺发育有关，近年来关注到血小板源生长因子（PDGF）对胎肺的作用［1］。国外对PDGF及受体在肺组织、肺细胞的表达有报道，虽各家结果不尽一致，但均认为PDGF及PDGFR对胎肺生长发育起重要作用，国内目前未见有关报道。本研究观察大鼠胎肺发育不同时期PDGF及PDG Peptide growth factor and fetal lung development, in recent years attention to platelet derived growth factor (PDGF) on the role of fetal lung [1]. Abroad, the expression of PDGF and its receptors in lung and lung cells has been reported. Although the results are not consistent, PDGF and PDGFR are both considered to play an important role in the growth and development of fetal lung, and no reports have been reported in China at present. This study was to observe the PDGF and PDG in different stages of fetal lung development in rats