title: The time of appearance, and quantitation, of fetal DNA in the maternal circulation.
authors.affiliation: Department of Biochemistry and Molecular Genetics, St. Mary's Hospital Medical School, London, United Kingdom.
authors.forename: M R
authors.initials: MR
authors.lastname: Thomas
authors.forename: R
authors.initials: R
authors.lastname: Williamson
authors.forename: I
authors.initials: I
authors.lastname: Craft
authors.forename: C H
authors.initials: CH
authors.lastname: Rodeck
mesh_terms: D053523:Amelogenin; D004247:DNA / Q000032:analysis*; D003746:Dental Enamel Proteins / Q000235:genetics; D005260:Female; D005333:Fetus / Q000166:cytology*; D005865:Gestational Age; D006801:Humans; D008297:Male; D016133:Polymerase Chain Reaction / Q000379:methods; D011247:Pregnancy / Q000097:blood*; D012732:Sex Determination Analysis / Q000379:methods; D014998:Y Chromosome
chemical_list: D053523:Amelogenin; D003746:Dental Enamel Proteins; D004247:DNA