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| Large monoblasts with central nuclei and abundant cytoplasm. The inset shows the monoblasts positive with alpha-napthyl acetate esterase (brown), and one blue chloroacetate esterase positive myelocyte. |
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| Large monoblasts with central nuclei and abundant cytoplasm. The inset shows the monoblasts positive with alpha-napthyl acetate esterase (brown), and one blue chloroacetate esterase positive myelocyte. |