Bone marrow aspirate from a patient with AML (FAB classification M2). (Wright-Giemsa stain). The WBC count was 70,000/microL and was comprised almost entirely of myeloblasts with numerous azurophilic granules.
AML: acute myeloid leukemia; WBC: white blood cell.
From: Brunning RD, McKenna RW. Tumors of the bone marrow. Atlas of tumor pathology (electronic fascicle), Third series, fascicle 9, 1994, Washington, DC. Armed Forces Institute of Pathology.