In conjunction with Emory University, researchers from Harvard designed an artificial zebrafish from human cardiac cells. The fish’s swimming pattern resembles a heartbeat, and researchers hope to use this as a stepping stone towards developing an entirely artificial heart. It utilizes two layers of muscle; when one side opens, the other stretches, opening a protein channel and starting the cycle again. The system uses “cardiac mechano-electrical signaling between two layers of muscle,” which is what allows for the opposing side to stretch. The researchers are cautiously optimistic for the future, as developing fully realized transplants is still a ways away.
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