DEFINITION of 'Windfall Tax'. A tax levied by governments against certain industries when economic conditions allow those industries to experience above-average profits. Windfall taxes are primarily levied on the companies in the targeted industry that have benefited the most from the economic windfall, most often commodity-based businesses.
acute leukemia leukemia in which the involved cell line shows little or no differentiation, usually consisting of blast cells; two types are distinguished, acute lymphoblastic leukemia and acute myelogenous leukemia. acute granulocytic leukemia acute myelogenous leukemia.
-The stroma is a three dimensional network of reticular cells and reticular fibers containing collagen type III, fibronectin, laminin, and proteoglycans. -Hematopoietic cells and macrophages interact with the stroma (through fibronectin, laminin, hemonectin, and cell receptors) forming hematopoietic cords. -Sinusoidal capillaries are supported and reinforced by the reticular cells and reticular fibers.