And so before the donation or transplantation actually takes place we know what types of pathogenic agents are found in that donated tissue or donated organ. Now the next question is how exactly do we solve these different complications? What exactly do we do? Well, the best case scenario the best way to actually ensure that the organ or tissue that is transplant that is successfully accepted by that host individual is to actually use the same tissue of that individual. Now of course this cannot be done always. We can, for example, easily transplant a piece of skin from one location to a different locations in our body.