title: Pregnancy hormone levels signal trisomy 21, improved screening, lower costs possible.
authors.forename: T
authors.initials: T
authors.lastname: Randall
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood; D004314:Down Syndrome / Q000175:diagnosis*; D004964:Estriol / Q000097:blood; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis*; D006801:Humans; D011247:Pregnancy / Q000097:blood*; D011296:Prenatal Diagnosis / Q000191:economics*; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D006063:Chorionic Gonadotropin; D000509:alpha-Fetoproteins; D004964:Estriol