title: An ultramicrochemical assay for sphingomyelinase: rapid prenatal diagnosis of a fetus at risk for Niemann-Pick disease.
mesh_terms: D000653:Amniotic Fluid / Q000166:cytology / Q000201:enzymology; D005260:Female; D006801:Humans; D008297:Male; D009542:Niemann-Pick Diseases / Q000175:diagnosis*; D010727:Phosphoric Diester Hydrolases / Q000032:analysis*; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*; D012867:Skin / Q000201:enzymology; D013108:Sphingomyelin Phosphodiesterase / Q000032:analysis* / Q000378:metabolism
chemical_list: D010727:Phosphoric Diester Hydrolases; D013108:Sphingomyelin Phosphodiesterase