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Original Article
A Case of (21q 21q) Translocation Down Syndrome Inherited from a t(21q 21q) Balanced Carrier Mother.
Byeong Gie Yeo, Chong Woo Bae, Yong Mook Choi, Chang Il Ahn, Bo Hoon Oh
Clin Exp Pediatr. 1990;33(7):1004-1008.   Published online July 31, 1990
Vast majority of t(21q 21q) Down syndrome occur de novo and familial cases are extremely rare. In familial translocation Down syndrome, One of the parent show 45 chromosomes. In general, the carrier parent carrying (21q 21q) translocation is phenotypically normal because significant amount of genetic material has not been lost in the translocation process. Homologous Robertsonian translocation can be produced either by abnormal gametogenesis...
Cytogenetic Study on Chromosome Aberration in Children.
Chong Woo Bae, Chang Il Ahn, Bo Hoon Oh, Kap Soon Ju
Clin Exp Pediatr. 1987;30(6):633-639.   Published online June 30, 1987
We have conducted a retrospective study on chromosomal aberrations in children, aged under 15 years old, who had been refered to cytogenetic laboratory at Kyung Hee University Hospital from 1977 to 1986 Base upon the Karyotypes of lymphocytes and chart records, the following results were obtained; 1) Chromosomal aberrations of various types were found in 101 cases in children. 2) Age distribution revealed 65.3% were under the...