Yes. Over the Christmas break, my cousin told me this fun fact. It’s called Chimera. And I’ve validated the information on the interwebs. Here is one article about Dr. Starzl, the guy who made human organ transplantation a reality: TRANSPLANTATION IMMUNOLOGY Discovery of Microchimerism. And, there’s a Wikipedia article about chimera. HOW COOL IS THAT?
Will You Have Two Sets of DNA After The Transplant?