title: First trimester CA 125 and Down's syndrome.
authors.forename: K
authors.initials: K
authors.lastname: Spencer
mesh_terms: D015295:Antigens, Tumor-Associated, Carbohydrate / Q000032:analysis*; D015415:Biomarkers / Q000097:blood; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011296:Prenatal Diagnosis / Q000379:methods*
chemical_list: D015295:Antigens, Tumor-Associated, Carbohydrate; D015415:Biomarkers