If you need a transplant, what advantages does the blood is of a family member?

The absence or inability to use own stem cells lead physicians to find alternative donors. Usually donors are being sought from the next of kin, preferably brothers, asthey are the ones most homology with the patient's cells and recipient of the grant. Thisimplies a lower probability of rejection of grafting, and increases to more than doublethe survival rate, with the added advantage of knowing where they come from the cells and therefore have the security of a known family history, in which genetic problemsare well described.