The genes expression level,such as c myc and c fos genes,distinctly increased comparing with normal adult lung,but these changes occurred in fetal lung genes expression profile pattern.

• 肺癌组织中c?myc、c?fos 相关基因等多个较正常肺组织表达增加的基因，其中有些基因表达变化与胚胎肺组织相似。