白血病动物虽然在骨髓充满原始红细胞却依然贫血，而真性红细胞增多症真的有很多红细胞。
Animals with erythroleukemia are anemic despite having a marrow filled with rubriblasts, where as those with polycythemia vera have erythrocytosis.
尽管临床上PV以红细胞增多为主，但骨髓分析显示此病有红系、粒系、巨核细胞系三系增生。
PV was characterized by erythrocytosis, but in most cases, there were erythrocytosis, guanulocytosis and thrombocytosis in bone marrow.
目的：调查白血病和骨髓增生异常综合征(MDS)患者红细胞酶和同工酶谱改变的患病率，并研究其临床意义。
Objective: To define the prevalence of acquired red cell enzymopathy in leukemia and MDS patients and explore its clinical significance.
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