title: Fetal cells in maternal blood as a second non-invasive step for fetal Down syndrome screening.
authors.forename: A
authors.initials: A
authors.lastname: Farina
authors.forename: D W
authors.initials: DW
authors.lastname: Bianchi
mesh_terms: D004314:Down Syndrome / Q000097:blood* / Q000175:diagnosis*; D005260:Female; D005312:Fetal Blood / Q000166:cytology*; D006801:Humans; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*