title: Lecithin: sphingomyelin ratio and presence of vernix in amniotic fluid.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D013109:Sphingomyelins / Q000032:analysis*; D014708:Vernix Caseosa
chemical_list: D010713:Phosphatidylcholines; D013109:Sphingomyelins