title: [Origin of the extra chromosome 21 in Down's syndrome].
authors.forename: J
authors.initials: J
authors.lastname: Egozcue
mesh_terms: D002891:Chromosomes, Human, Pair 21; D004314:Down Syndrome / Q000235:genetics*; D006801:Humans
vernacular_title: Origen del cromosoma extra 21 en el síndrome de Down.