TY - JOUR AU - RERRICK, E. G. AB - E. G. RERRICK Pineland Hospital and Training Center, Pownal, Maine 04069, U.S.A. Reports and studies of patients with XXXX chromosomes or mosaics having a cell line with XXXX chromosomes are rare and it seems useful to report an additional masaic XXX/XXXX case, observed in our instilution for the mentally retarded. CASE HISTORY This 33 year old white female patient was admitted in 1949 at the age of 13 to our itistitution because of mental retardation. No mentally retarded relatives are recorded. Each parent was 25 years old when the patient was born. There was no consanguinity. She was the first child born at full term, weighing 2,680 g. Her general development was good until the age of 10 months. At this time she fell, striking her face on a table which caused broken nose and, supposedly, a brain lesion. Following this episode she would no longer hold her bottle or call her mother and her mental progress was slow. She started to talk at the age of 1| years, walked alone at the age of 2i years and by the age of 7 she acquired tidy habits. Except the usual childhood diseases, her general health was good. She TI - MOSAIC XXX/XXXX SEX CHROMOSOME COMPLEMENT CASE REPORT AND REVIEW OF LITERATURE JF - Journal of Intellectual Disability Research DO - 10.1111/j.1365-2788.1970.tb01108.x DA - 1970-06-01 UR - https://www.deepdyve.com/lp/wiley/mosaic-xxx-xxxx-sex-chromosome-complement-case-report-and-review-of-4alsGsEQm2 SP - 141 VL - 14 IS - 2 DP - DeepDyve ER -