title: Improved thin-layer chromatographic assay for monitoring lecithin/sphingomyelin ratios in amniotic fluid.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis*; D000817:Anilino Naphthalenesulfonates; D002855:Chromatography, Thin Layer / Q000379:methods; D005260:Female; D005456:Fluorescent Dyes; D006801:Humans; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D013109:Sphingomyelins / Q000032:analysis*
chemical_list: D000817:Anilino Naphthalenesulfonates; D005456:Fluorescent Dyes; D010713:Phosphatidylcholines; D013109:Sphingomyelins; C027132:1-anilino-8-naphthalenesulfonate