more on bone marrow and kidney transplants

Well, my sister did some googling and appears to have come up with some more information, right off the PKD Foundation web site. The essential part of the article is:

For her second transplant at age 22, she opted for an experimental treatment that would allow her body to tolerate the new organ without drugs.
Doctors began by using radiation and chemotherapy to weaken Searl's immune system. Then she received both a kidney and bone marrow to regenerate a new, compatible immune system from her donor - her mother.

Jeanne and I immediately both had the same question: So, what keeps your new immune system from attacking your old organs? In any case, it does appear this procedure has demonstrated some success, which is pretty exciting.

Thanks, Cindy, for tracking this down for me!