Doctors have successfully implanted artificial body parts, including bladders and veins, from the cells of their patients. They’re hard at work trying to grow other organs – everything from ears to kidneys. Soon these science fiction projects may become a reality.

Regenerative medicine pioneer Organovo has already managed to output blood vessels and cardiac tissue via a 3d printer that dispenses cells instead of ink. The material created actually fused into living tissue just 70 hours after being printed, and started beating 20 hours after that. Organovo is set to begin selling 3D printed liver tissue by the end of the year, according to CNN.

Read more about the strange world of 3D Printed Body Parts here: