A “biohybrid” robotic hand built using real human muscle cells

Tokyo University researchers developed an 18-cm biohybrid human-like hand with five fingers driven by lab-grown muscles. They overcame necrosis in thick muscle tissues using a "sushi rolling" technique to create cylindrical bundles called MuMuTAs, maintaining oxygen diffusion and optimizing muscle contractility. This innovation enables larger, more complex biohybrid robots, advancing the integration of biological components with artificial structures for more lifelike robotic systems.