Bone marrow transplantation requires a match, many people know, but what is the specific match, not many people know, some people think it is the blood type match can be. Last week, a family of four came to the clinic and asked for a paternity test because the father found that his son’s blood type did not match his own and suspected that he was not his own son. In fact, blood type, bone marrow transplant matching and paternity testing are not the same. The blood type is needed to identify when the blood transfusion, the blood type is not different can not indicate that it is not paternity, the blood type is the same can not indicate that it is paternity (this we all understand, seems to say a little nonsense). This is determined by the genetic law of blood type. Bone marrow transplantation is the same as the method of paternity testing, but because of the different needs, more loci are required for paternity testing. As for the principle that blood type and bone marrow transplant mating are different, I won’t go into it here.