Gericke, G. S. Steyn, M. F. Retief, A. E. Thom, J. C. Van Niekerk, W. A.
(Health and Medical Publishing Group (HMPG), 1975)
The clinical, cytogenetic and dermatoglyphic findings in a patient with a ring chromosome 21 are presented. This anomaly acts as a deletion of chromosomal material and results in specific congenital defects. A comparison ...