
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.
Adult, Phenotype, Adolescent, Superoxide Dismutase, Child, Preschool, Karyotyping, Chromosome Mapping, Humans, Female, Down Syndrome, Chromosome Banding, Pedigree
Adult, Phenotype, Adolescent, Superoxide Dismutase, Child, Preschool, Karyotyping, Chromosome Mapping, Humans, Female, Down Syndrome, Chromosome Banding, Pedigree
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