Figure 4From: An intracranial extramedullary hematopoiesis in a 34-year-old man with beta thalassemia: a case report Microscopic view of the excised brain lesion. Demonstrates (A) the infiltration by foci of hematopoietic cells and megakaryocytes (hematoxylin and eosin stain, original magnification ×40) and (B) megakaryocytes and endothelial cells positive for factor VIII related antigen (hematoxylin and eosin stain, original magnification ×40).Back to article page