What is cord blood? – Cord Blood Bank – NHS Blood and Transplant

Stem cells arespecial 'building block' cells in the body that can develop into many different types of cell. Blood-producing stem cells arefoundin cord blood, and when a cord blood donation is given to someone in need of life-saving treatment, candevelop into the type of blood cell that the patient's body needs. This could be red blood cells, white blood cells or platelets

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