U.K. doctors have developed a technique that could eliminate the need for chemotherapy drugs to administer a bone marrow transplant in children suffering from primary immunodeficiencies, or genetic disorders affecting the immune system, and who must live in "bubbles," or sterile environments. The treatment uses an antibody, which homes in on a molecule linked to blood and bone cells, to wipe out a patient's bone marrow and provide space for donor stem cells.

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