Girl switches blood type after liver transplant in first known case: doctors
SYDNEY (AFP) - An Australian girl spontaneously switched blood groups and adopted her donor's immune system following a liver transplant in the first known case of its type, doctors treating her said Thursday.
Demi-Lee Brennan was aged nine and seriously ill with liver failure when she received the transplant, doctors at a top Sydney children's hospital told AFP.
Nine months later it was discovered that she had changed blood types and her immune system had switched over to that of the donor after stem cells from the new liver migrated to her bone marrow. [...]
The implications of this are astounding! This is really cool. Really, really cool!! So she has two immune systems that the body now recognizes are her own. At least I think that is how it has worked out. Otherwise, wouldn't her "new" immune system reject all her other organs in favor of the donor liver?