In yet another demonstration of bioprinting's possibilities, scientists have managed to retrofit a robotic arm with six degrees of movement freedom to 3D-print cardiac tissue. The faux heart managed to beat for at least six months, demonstrating the viability of the technology.
https://www.notebookcheck.net/3D-printed-heart-tissue-created-by-retrofitting-robotic-arm-beats-for-six-months.604534.0.html