Basic Introduction 1.
Bone marrow is a substance found in the hollow bones of the hips, legs and arms.
Some people have diseases that alter or destroy the bone marrow. These high-dose treatments kill cancer cells but also kill normal bone marrow stem cells. Once the stem cells are destroyed, blood production stops. Blood or bone marrow transplants restore stem cells destroyed by disease or treatment. All transplants supply hematopoietic stem cells to restore blood production.