We conclude that maternal exposure to nicotine (2mg/kg/Day) during pregnancy does not influence collagen gene expression or collagen contents in postnatal rat lungs.

• 结论是母鼠尼古丁治疗（每天每公斤2毫克）并不会影响仔鼠肺脏胶原蛋白的基因的表现及肺泡间壁胶原蛋白的量。