Here is an interesting article on Chimerism
http://www.wisegeek.com/what-is-chimerism.htm
I met a guy some time ago who told me he had two different blood types. I thought that was interesting because I never heard of anything like that happening.
http://www.wisegeek.com/what-is-chimerism.htm
I met a guy some time ago who told me he had two different blood types. I thought that was interesting because I never heard of anything like that happening.