Cupric acetate-phosphoric acid staining inadequately reflects the lecithin/sphingomyelin ratio.
D000653:Amniotic Fluid / Q000032:analysis*; D005260:Female; D006801:Humans; D010713:Phosphatidylcholines / Q000032:analysis*; D011247:Pregnancy; D013109:Sphingomyelins / Q000032:analysis*; D013194:Staining and Labeling
D010713:Phosphatidylcholines; D013109:Sphingomyelins