title: On the origin of chromosome anomaly.
authors.affiliation: Department of Medical Genetics, Oregon Health Sciences University, Portland 97201.
authors.forename: R E
authors.initials: RE
authors.lastname: Magenis
mesh_terms: D002869:Chromosome Aberrations; D002871:Chromosome Banding; D025063:Chromosome Disorders; D002891:Chromosomes, Human, Pair 21; D004314:Down Syndrome / Q000235:genetics*; D006801:Humans