Anatomic changes in lung parenchyma due to aging process.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008168:Lung / Q000033:anatomy & histology* / Q000502:physiology; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D011650:Pulmonary Alveoli / Q000033:anatomy & histology*