pulmonary functions , morphology , and morphometry were examined in rats at 3 , 7 , and 10 weeks after a single intratracheal administration of 6.5 units of porcine pancreatic elastase in order to obtain a model of pulmonary emphysema which would be suitable for studying the responses of emphysematous lungs to atmospheric pollutants .
C0034067
pulmonary emphysema
C0024109
lungs