If someone gets a bone marrow transplant or a kidney transplant or something, do they become chimeras? Or will their body eventually settle on one set of DNA? And if the latter is the case, do they have to take antirejection drugs for the rest of their life, or only until their body settles?
I've heard of people who've received bone marrow transplants having a change of hair color grow in. Is this possible? Would it be a permanent change?
Finally, they will be chimeras for a short while at least, right? How would this affect DNA testing by someone who was unaware that the subject in question had received a transplant? Would they show a positive match with their old DNA? A negative match with their old DNA? Would some sort of anomaly show up in the test that would cause the tester to realize that something isn't as expected?
Thank you for your time. And thank your for all the neat science.