title: Third International Workshop on Human Chromosome 21.
authors: Johns Hopkins University School of Medicine, Center for Medical Genetics, Baltimore, Maryland 21287.
authors: S E
authors: SE
authors: Antonarakis
mesh_terms: D000818:Animals; D002874:Chromosome Mapping; D002891:Chromosomes, Human, Pair 21; D006801:Humans; D051379:Mice; D011110:Polymorphism, Genetic