Fetal lung development.
D000818:Animals; D005260:Female; D005333:Fetus / Q000502:physiology; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007233:Infant, Postmature; D007234:Infant, Premature; D008168:Lung / Q000187:drug effects / Q000196:embryology* / Q000502:physiology; D011247:Pregnancy; D011663:Pulmonary Surfactants / Q000502:physiology*; D012756:Sheep; D013256:Steroids / Q000494:pharmacology
D011663:Pulmonary Surfactants; D013256:Steroids