Definition of Myeloproliferative

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Myeloproliferative: Referring to the proliferation of the bone marrow cells that give rise to red blood cells, granulocytes (a type of white blood cells), and/or platelets (crucial to blood clotting). The term myeloproliferative is in contrast to lymphoproliferative which refers to proliferation of lymphoid cells and reticuloendothelial cells such as macrophages. Both terms -- myeloproliferative and lymphoproliferative -- can be applied to conditions that are entirely benign, premalignant, or frankly malignant.