Development of the acinus in the human lung.
D001980:Bronchi / Q000254:growth & development; D002648:Child; D002675:Child, Preschool; D005865:Gestational Age; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008168:Lung / Q000196:embryology / Q000254:growth & development*; D009024:Morphogenesis; D011650:Pulmonary Alveoli / Q000254:growth & development