Bone marrow aspirate from a patient with AML (FAB classification M1). (Wright-Giemsa stain). The majority of cells have a rim of pale to slightly basophilic agranular cytoplasm. The nuclei have finely dispersed chromatin and prominent nucleoli.
AML: acute myeloid leukemia.
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.