American David Bennett, who made history about two months ago when a pig's heart was implanted in his body that began to beat, passed away on Tuesday.
It is not clear what the official cause of death is, but it is possible that the implantation process and the long, unfinished recovery contributed to it.
His medical condition has deteriorated in recent days and as mentioned, on Tuesday his heart stopped beating, which was actually a pig's heart.
Bennett was the first person to have an organ transplanted from an animal that was genetically adapted to be absorbed and function in humans.
"We are devastated at the death of Mr. Bennett. He was a brave and noble man who fought all the way to the end," said the surgeon who performed the historic transplant.
"He was known to millions around the world because of his courage and determination to live."
Although the surgery allegedly extended his life by only two months, it seems that his contribution to the field of medicine is invaluable because for the first time experts were able to track a successful transplant of an organ from the animal world onto the human body.
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