嗜天青颗粒是一种溶酶体，用于消化细菌，内含酸性水解酶、过氧化物酶等多种活性酶，存在于幼粒白血球、单核白血球、淋巴球等细胞中，有效帮助人体杀灭病菌。
淋巴细胞为圆形，核较大，胞质内含有板状嵴线粒体、粗面内质网和嗜天青颗粒。
Lymphocyte is round, there are mitochondrion, rough endoplasmic reticulum and azurophil granule in their cytoplasm.
细胞形态学上K562细胞原始未分化特性比较明显，HL60细胞质内已有嗜天青颗粒和空泡等细胞分化特征。
MPO was positive in HL60 cells. K562 cells morphology obviously showed a primitive and no-differentiation characteristic.
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