Prenatal diagnosis of cystic fibrosis: false negative result with the 4-methylumbelliferyl-p-guanidinobenzoate assay for proteases in amniotic fluid.
D000653:Amniotic Fluid / Q000201:enzymology*; D003550:Cystic Fibrosis / Q000175:diagnosis*; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D006923:Hymecromone / Q000031:analogs & derivatives; D007525:Isoelectric Focusing; D008970:Molecular Weight; D010447:Peptide Hydrolases / Q000032:analysis*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012016:Reference Values
C017532:4-methylumbelliferylguanidinobenzoate; D006923:Hymecromone; D010447:Peptide Hydrolases