title: Prenatal diagnosis of Niemann-Pick disease type A using chromogenic substrate.
mesh_terms: D000653:Amniotic Fluid / Q000166:cytology; D002794:Choline / Q000031:analogs & derivatives*; D005260:Female; D005347:Fibroblasts; D006801:Humans; D009542:Niemann-Pick Diseases / Q000175:diagnosis*; D010767:Phosphorylcholine / Q000031:analogs & derivatives*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012867:Skin / Q000473:pathology; D013109:Sphingomyelins
chemical_list: D013109:Sphingomyelins; D010767:Phosphorylcholine; D002794:Choline