title: Determination of lecithin-sphingomyelin ratio in amniotic fluid.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D002855:Chromatography, Thin Layer; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D005865:Gestational Age; D006801:Humans; D007202:Indicators and Reagents; D007231:Infant, Newborn; D008470:Meconium / Q000032:analysis; D008722:Methods; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis; D013048:Specimen Handling; D013109:Sphingomyelins / Q000032:analysis*; D013696:Temperature
chemical_list: D007202:Indicators and Reagents; D010713:Phosphatidylcholines; D013109:Sphingomyelins