Heart Transplantation

The world’s first human heart transplant was performed by Christiaan Barnard in 1967.   Worldwide, about 3,500 heart transplants were performed annually as of 2007; about 800,000 people had a Class IV heart defect indicating a new organ. This disparity spurred research into the transplantation of non-human hearts into humans after 1993. Xenografts from other species and man-made artificial hearts are two less successful alternatives to allografts. (from Wikipedia)

The heart can be kept warm and viable for many hours in this device.  Photo by Robert Clark (source geneticist.tumblr)

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