图1. 不同骨髓增生异常综合征（MDS）亚型患者的平均基因突变数目（A）和不同基因突变数目的比例（B）.
RCUD：难治性血细胞减少伴单系发育异常；RCMD：难治性血细胞减少伴多系发育异常；RAEB：难治性贫血伴原始细胞增多；RARS：难治性贫血伴环状铁粒幼红细胞
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