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Which blood and immune cells can arise from hematopoietic stem cells?

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Hematopoietic stem cells are the primitive cells from which all blood and immune cells originate through a process of differentiation. These stem cells give rise to four major blood cell lineages:1

  • Red blood cells (erythrocytes): Responsible for transporting oxygen throughout the body.1
  • Phagocytic cells: These include granulocytes—such as neutrophils, eosinophils, and basophils—and monocytes. These cells ingest and break down foreign particles and microorganisms.12
  • Lymphocytes: These cells are essential components of the immune system and are involved in the body's defense against infection.1
  • Megakaryocytes: These large bone marrow cells produce platelets, which are critical for blood clotting.1

Through complex signaling involving colony-stimulating factors, these stem cells divide and differentiate into specialized precursor cells to meet the body's ongoing physiological demands.1