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用G带法,对300例新生儿染色体分析,我们发现一例47,ⅩⅩ+21;一例12号染色体长臂内倒位;一例17号染色体长臂末端断裂;一例Ⅹ-染色体长臂末端缺失。染色体畸变率为0.33％。
Chromosome analysis of 300 newborns using G banding revealed one case of 47, XX + 21; one in the long arm of chromosome 12; one in the long arm of chromosome 17; and the other in the absence of the long arm of chromosome X. Chromosome aberration rate was 0.33%.