Heart chambers 3D printed from live human cells can beat for months
A new technique enables 3D printing of miniature heart chambers called ventricles that can beat on their own, and may one day help create whole hearts for transplantation
![Heart chambers 3D printed from live human cells can beat for months](https://images.newscientist.com/wp-content/uploads/2023/06/23110549/SEI_161417894.jpg)
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