Chromosomal abnormalities are an important cause of mental retardation. We studied the frequency of karyotype abnormalities in 74 mentally retarded patients selected from 306 patients referred to our clinic. Giemsa-banding was done on all cases. Additional studies in abnormal cases included autoradi
Cytogenetic Studies on the Mentally Retarded Children
โ Scribed by Satoshi Yanagisawa
- Book ID
- 118709775
- Publisher
- John Wiley and Sons
- Year
- 1968
- Tongue
- English
- Weight
- 60 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1328-8067
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๐ SIMILAR VOLUMES
A cytogenetic survey of all 588 patients in Strathmont Training Centre, an Australian hospital for the mentally retarded, was carried out. Abnormal karyotypes were found in 90 (15.3%) patients, of whom 73 (12.4%) had clinical Down syndrome, 12 (2.04%) other autosomal abnormalities, and 5 (0.85%) sex
Heteromorphisms of chromosomes 3, 4, 13-15, 21-22, and Y were studied in a population of 374 mentally retarded patients from diverse ethnic groups. A significant variation in the size of the Y chromosome was found among different racial groups, those of the Orientals and Filipinos being larger than