title: [Chromosome 21 deciphered. An impetus to research on Down syndrome?].
authors.forename: K
authors.initials: K
authors.lastname: Appel
mesh_terms: D002874:Chromosome Mapping; D002891:Chromosomes, Human, Pair 21 / Q000235:genetics*; D004314:Down Syndrome / Q000235:genetics*; D006801:Humans; D007621:Karyotyping; D012106:Research