title: A comparison between the lecithin-sphingomyelin ratio and other methods of assessing the presence of fetal pulmonary surfactant in amniotic fluid.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D002855:Chromatography, Thin Layer; D005260:Female; D006801:Humans; D008722:Methods; D010713:Phosphatidylcholines / Q000032:analysis*; D010743:Phospholipids; D011247:Pregnancy; D011296:Prenatal Diagnosis; D011663:Pulmonary Surfactants / Q000032:analysis*; D012997:Solvents; D013109:Sphingomyelins / Q000032:analysis*; D013194:Staining and Labeling
chemical_list: D010713:Phosphatidylcholines; D010743:Phospholipids; D011663:Pulmonary Surfactants; D012997:Solvents; D013109:Sphingomyelins