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Throughout history, many attempts have been made to transplant kidneys, hearts, livers, and other animal tissues into humans, however, with very limited success. There has never been a successful whole organ animal to human transplant. Most human recipients die anywhere from hours to weeks after receiving the animal organ. Xenotransplantations are still experimental, and there are serious risks allocated with the procedures. According to the doctor's group, even genetically altered animals could harbour pathogens capable of causing catastrophic illness in humans. Why is this process being investigated at present? The development of xenotransplantation is, in part, driven by the fact that the demand for human organs for clinical transplantation far exceeds the supply. (Beauchamp par.2) Xenotransplants do not represent the best solution for the current organ shortage crisis, due to the fact that, there is risk of introducing new viruses into the human population, the animal organs are unable to sustain the human body and there are ethical concerns pertaining to animal rights. Firstly, primates harbour a range of micro organisms known to be pathogenic to humans. They may transmit viruses that could hurt not only the recipient but