however , just as we have learned stepwise to use marrow transplants from matched siblings to treat many diseases , to use fetal liver in place of bone marrow , to employ matched relative donors when a matched sibling is not available , and , finally , even to use parental donors to achieve correction of scid , we now have good reason to believe that , ultimately , we can use marrow transplantation without fear of gvhd to address many additional genetically determined and acquired diseases ;
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C0005961
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