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Miniature working human heart grown in petri dish

Scientists from the University of Pittsburgh School of Medicine have successfully grown a working heart in a petri dish using the frame of a mouse’s heart and adult human skin cells, reverted back into their basic stem cell state. The heart works fully but beats at only half the speed of a full human heart — as well as obviously being too small. However, the breakthrough is the latest in a long line of developments which could revolutionise organ transplants.