Cool.  Not practical yet, but still very cool!

Scientists at Tel Aviv University have achieved a world-first by 3D printing a small-scale heart, complete with blood vessels, ventricles, and chambers. The heart was printed using human cells, something that would make it far less likely to be rejected by a transplant patient’s body.

Source: Scientists Have 3D-Printed an Actual Heart Using Human Cells | Digital Trends

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