Grafting rat muscle to synthetic fibers. Amazing
Imagine origami that can fold itself into the shape of a fish or a slug—and then swim or crawl around under its own power. Researchers at Harvard University have created thin sheets of elastic film studded with rat heart muscle cells that are bringing that fantastic scenario closer to reality.
http://news.nationalgeographic.com/news/2007/09/070906-flexing-muscles.html
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