Heart failure: transplantation of animal organs into human patients 'more viable'
Heart transplantation is the main treatment for end stage . Heart patients awaiting a transplant must rely on mechanical devices, which can increase the risk of infection, blood clots and bleeding in the patient.
A proposed alternative has been to use animal hearts in human patients, which is known as "xenotransplantation."
Scientists have reported success in transplanting the hearts from genetically engineered piglets into the abdomens of baboons, where the hearts have survived for more than 1 year.