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(2)原始粒细胞白血病部分分化型(M_(2a))(图61～63)骨髓中原始粒细胞>30%～<90%(非红系细胞),单核细胞<20%,早幼粒细胞以下阶段>10%。原始粒细胞白血病部分分化型(M_(2b))骨髓中异常的原始粒细胞及早幼粒细胞明显增多,以异常的中性中幼粒细胞增生为主,其胞核常有核仁。有明显的核浆发育不平衡,此类细胞>30%。
(2) Primitive granulocytes> 30% ~ <90% (non-erythroid cells), mononuclear cells <20%, myelodysplastic syndromes in myeloid leukemia (M_ (2a) Granulocytes in the following stages> 10%. The abnormal myeloblasts and promyelocytic cells in the partially differentiated (M_ (2b)) myeloid leukemia were significantly increased, with abnormal neutrophilic myelocytic hyperplasia and nucleus often with nucleolus. There is a clear imbalance of nuclear plasma development, such cells> 30%.