In a groundbreaking new study, researchers at the University of Minnesota have 3D printed a functioning centimeter-scale human heart pump in the lab. Videos show the production of the human heart using a 3D bioprinter and its function in pumping fluids. The discovery could have major implications for studying heart disease, one of the leading causes of death in the world.

references:

 Kupfer, Molly E., et al. “In situ expansion, differentiation, and electromechanical coupling of human cardiac muscle in a 3D bioprinted, chambered organoid.” Circulation Research 127.2 (2020): 207-224.