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It's a nice step forward, but a bone marrow transplant is not cheap, so it will be out of reach to the overwhelming majority of worldwide AIDS patients, and you need those 1% of whites who are immune to AIDS to be identified and be willing to donate their bone marrow. It's hard enough finding people willing to donate blood. Marrow donation is a much more invasive and painful procedure.
Much better would be some sort of vaccine you could manufacture on a large scale.
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