title: [Amniotic fluid and fetal maturity. II. The lecithin/sphingmyelin ratio].
mesh_terms: D000328:Adult; D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D006819:Hyaline Membrane Disease / Q000175:diagnosis*; D007231:Infant, Newborn; D008168:Lung / Q000502:physiology; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D013109:Sphingomyelins / Q000032:analysis*
chemical_list: D010713:Phosphatidylcholines; D013109:Sphingomyelins
vernacular_title: Liquido amniotico e maturità fetale. 2. Rapporto lecitine/sfingomieline