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Case Report
A Case of Mosaic Tetraploidy
Ji-hwan Choi, Ju-a Lee, So-ra Lee, Yeon-kyun Oh, Hee-sub Rhee, Jeong-joong Kim, See-sung Choi
Clin Exp Pediatr. 2000;43(9):1274-1278.   Published online September 15, 2000
Tetraploidy of human chromosome(92, XXYY) has been described very rarely. Liveborn infant with tetraploidy was reported in only 17 cases(complete 7 cases, mosaicism 10 cases) in the world, and no cases have been reported in Korea. The diploid-tetraploid mosaicism could arise during the early mitosis of the zygote : In one blastomeric cell, the chromosomes replicate but the cytoplasm does...
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