Cart is empty Contrary to previous beliefs, stem cells, from which all new blood cells are formed, remain in bone marrow in the blood cancer type acute lymphocytic leukemia. This disease, however, causes a hidden defect in the stem cells that, over time, makes them lose their ability to form new blood cells. These findings, by researchers at Linköping University in Sweden, may be part of the explanation for why leukemia survivors experience negative effects on blood formation decades later.
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