The level of VEGFmRNA and eNOSmRNA expression in pulmonary arterial endothelial cells decreased after 2wks and 4 wks of intratracheal BLM.

• 肺动脉内皮细胞VEGFmRNA及eNOSmRNA表达水平：幼兔气管内注射BLM 2周与4周后肺动脉内皮细胞VEGFmRNA和eNOSmRNA表达均减少。