In APL, there is a drop in the production of normal red blood cells and platelets, resulting in anemia and thrombocytopenia. The bonemarrow is unable to produce healthy red blood cells.
Bonemarrow that actively produces blood cells is called redmarrow, and bone marrow that no longer produces blood cells is called yellow marrow.
活跃生产血细胞的骨骼叫做红骨髓，不再产生血细胞的骨骼叫做黄骨髓。
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In addition to producing red and white blood cells and platelets, your bonemarrow makes antibodies - proteins that protect you against infection and disease.