Development of the mucous glands in the human main bronchus.
D001980:Bronchi / Q000033:anatomy & histology / Q000196:embryology*; D005260:Female; D005333:Fetus / Q000033:anatomy & histology; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D013194:Staining and Labeling