title: [Partial trisomy 21].
abstract: Three mentally retarded children with partial trisomy 21 who looked like children with complete trisomy 21 had increased activity of superoxide dismutase A. This emphases the pathogenic role of the 21q22 band in this condition.
mesh_terms: D000293:Adolescent; D000328:Adult; D002675:Child, Preschool; D002871:Chromosome Banding; D002874:Chromosome Mapping; D004314:Down Syndrome / Q000201:enzymology* / Q000235:genetics; D005260:Female; D006801:Humans; D007621:Karyotyping; D010375:Pedigree; D010641:Phenotype; D013482:Superoxide Dismutase / Q000378:metabolism*
chemical_list: D013482:Superoxide Dismutase
vernacular_title: Trisomie 21 partielle.