Lynn,
It is my understanding also that they don't go away on their own.
I don't know how many of you here have been following Grant Beltrami's BMT, but he rejected his first graft because of antibodies to his donor's marrow. To remedy that, they did a process of plasma pheresis, where his plasma (which presumably contained the antibodies) was removed and replaced with albumen. Then they were able to try again with the same donor. I think I have that right; if not, perhaps Ruth can correct me. At any rate it sounds like a fairly radical procedure to me. I don't know if anything like that is ever done outside of a transplant setting, but it certainly isn't routine.
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-Lisa, husband Ken age 60 dx SAA 7/04, dx hypo MDS 1/06 w/finding of trisomy 8; 2 ATGs, partial remission, still using cyclosporine
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