Registering as a bone marrow donor is particularly valuable if you're mixed race. Bone marrow transplants require a very high degree of genetic similarity, so i

Registering as a bone marrow donor is particularly valuable if you're mixed race. Bone marrow transplants require a very high degree of genetic similarity, so it can be very difficult to find matches for mixed race recipients. http://content.time.com/time/health/article/0,8599,1993074,00.html http://content.time.com/time/health/article/0,8599,1993074,0...