Supernumerary small ring chromosome.

@article{Kaffe1977SupernumerarySR,
  title={Supernumerary small ring chromosome.},
  author={Sara Kaffe and Hee Joong Kim and Lillian Y F Hsu and Claus-Werner Brill and Kurt Hirschhorn},
  journal={Journal of medical genetics},
  year={1977},
  volume={14 6},
  pages={447-51}
}
A supernumerary small ring chromosome was found in 30% of cultured peripheral leucocytes and 50% of skin fibroblasts in a 6-year-old boy with mild mental retardation and midline cleft palate. The extra chromosome appeared to carry a densely staining region on Giemsa banding. The banding patterns of the remaining 46 chromosomes were normal. C banding… CONTINUE READING