There are important distinctions between autologous (getting your Jen marrow back after ablation) and allogeneic (someone else’s cells) transplants. The harves

There are important distinctions between autologous (getting your Jen marrow back after ablation) and allogeneic (someone else’s cells) transplants. The harvesting technique is now done using drugs like neupogen to mobilize the marrow stem cells into the blood stream where they can be collected in a process like dialysis. This is instead of having to actually extract marrow from the donor, which truly was barbaric, but I’m not sure if that’s done anymore. The transplant process requires ablation (destroying the recipients existing cells) which I think can be done with chemo or radiation. It’s ~ a month in isolation to recover and the side effects of the ablation are also no fun but I’m not sure about “most dreaded”? There are probably some variations of the procedure which are much more difficult than others.