Not swine organs but human organs grown in swine. And this would be just the start of many other efforts to grow human organs for transplant. “If the result of xenotransplantation is satisfactory with porcine kidneys to humans, then it is likely that hearts would be used with good effects in humans within a few years,” the 87-year-old said. “If it works with a kidney, it will work with a heart. That will transform the issue.” The anatomy and physiology of a pig’s heart is similar to that of a human’s, so they are used as models for developing new treatments. Hopes for a successful heart attack treatment were raised in May after a genetic therapy showed promise in pigs. An international team of researchers, including UK scientists, found that delivering a small piece of genetic material called microRNA-199 into a heart damaged by an attack caused cells to regenerate. Much more @ Pig to human heart transplants 'possible within three years'