What are megakaryocytes?

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What are megakaryocytes?

Megakaryocytes are large bone marrow cells that give rise to platelets. They originate from hematopoietic stem cells and mature through megakaryopoiesis, becoming polyploid and extending cytoplasmic processes into bone marrow sinusoids. Platelets are released as small cytoplasmic fragments from these proplatelets and circulate to help stop bleeding by forming platelet plugs and releasing granule contents that support coagulation. They are not red blood cell precursors (which come from the erythroid line), not white blood cell precursors, and not liver cells producing clotting factors.

Megakaryocytes are large bone marrow cells that give rise to platelets. They originate from hematopoietic stem cells and mature through megakaryopoiesis, becoming polyploid and extending cytoplasmic processes into bone marrow sinusoids. Platelets are released as small cytoplasmic fragments from these proplatelets and circulate to help stop bleeding by forming platelet plugs and releasing granule contents that support coagulation. They are not red blood cell precursors (which come from the erythroid line), not white blood cell precursors, and not liver cells producing clotting factors.

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