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Slide 29
The largest cell in this field is a basophilic megakaryocyte. Megakaryoblasts are not clearly identifiable cells as are the blasts of the myelocytic and erythrocytic series. Bessis in his book Blood Smears Reinterpreted (see Suggested Readings) classes four stages of megakaryocytic development that are recognized as follows: (1) basophilic megakaryocytes (MK1), (2) granular megakaryocytes (MK2), and (3) platelet-producing megakaryocytes (MK3). The final stage is platelets and naked nuclei.

Course Section: 06. Microscopic Examination of the Bone Marrow
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