title: Prenatal-screening companies expand scope of DNA tests.
authors.forename: Erika Check
authors.initials: EC
authors.lastname: Hayden
mesh_terms: D002872:Chromosome Deletion; D002892:Chromosomes, Human, Pair 22 / Q000235:genetics; D004247:DNA / Q000235:genetics; D004062:DiGeorge Syndrome / Q000235:genetics; D005820:Genetic Testing / Q000941:ethics / Q000639:trends*; D006801:Humans; D011296:Prenatal Diagnosis / Q000941:ethics / Q000639:trends*; D012680:Sensitivity and Specificity; D035501:Uncertainty
chemical_list: D004247:DNA