title: Current state of second trimester screening for Down's syndrome.
authors.forename: J A
authors.initials: JA
authors.lastname: Canick
mesh_terms: D000649:Amniocentesis; D015415:Biomarkers; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007265:Inhibins / Q000097:blood*; D008403:Mass Screening; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis / Q000379:methods*; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D015415:Biomarkers; D000509:alpha-Fetoproteins; D007265:Inhibins