Moreira L M, Ferrari I
Rev Bras Pesqui Med Biol. 1976 Sep;9(4):193-8.
One boy with Down's syndrome was found to be a rearranged chromosome 21q/21q. Cytogenetic analysis by G-banding techniques did not show if the rearranged chromosome was a translocation or an isochromosome. The karyotype of both parents was normal.
发现一名患有唐氏综合征的男孩为21号染色体长臂重排/21号染色体长臂重排。采用G显带技术进行的细胞遗传学分析未显示重排染色体是易位还是等臂染色体。其父母的核型均正常。