"“We’re transplanting a whole (mishmash) of cells and relying on the rare stem cells (in the mix) to actually do the job,” Dick [John Dick, a senior scientist at the Ontario Cancer Institute] says.
"These non-stem cell components, he says, increase the risk of a rejection condition known as graft-versus-host disease, where immune cells lingering in the donated marrow begins to attack the recipient.
"“By now going in and fishing out stem cells, we’ll be able to transplant pure populations of cells for transplantation,” Dick says."
Full article: Toronto team first to isolate blood stem cells - Healthzone.ca.
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