to evaluate the patterns of normal lung tissue , alveolar and interstitial oedema , macrophage collections , haemorrhage and infarction in radiographs of excised air-inflated lungs at autopsy , the distribution of these findings in 89 lungs was determined histologically on 441 sections sampled from 59 lungs selected to represent unequivocally the features in question .
C0819757
normal lung tissue
C0024109
lungs