title: False positive in prenatal diagnosis of cystic fibrosis.
mesh_terms: D000293:Adolescent; D004796:Clinical Enzyme Tests; D003550:Cystic Fibrosis / Q000175:diagnosis*; D003951:Diagnostic Errors; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D008871:Microvilli / Q000201:enzymology; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014463:Ultrasonography