It is. I had an (donor) Allo stem cell transplant. Fortunately my insurance paid for all of it. It also paid for the retrieval of the cells and medical costs for my sister who was my donor.
Recovery is very difficult. The conditioning Chemo they use literally decimated the bone marrow. My blood dna is now exactly my sisters. The process is amazing. They give the cells via a transfusion. The cells make their way to the bone marrow and they then begin the replication process. I grafted in less than a month in which my dna changed to my sisters.
If a female has a male donor. Her blood will show as XY.
That sounds too intricate for puny, ignorant men to be attempting. How do you know what the long term side effects are?