A team of scientists from Harvard University and the California Institute of Technology have built an eight-armed jellyfish by inserting muscle cells from a rat into a sheet of silicone. The resulting "medusoid," as they called it, could offer insights into tissue engineering -- such as re-building a heart. And show that when building tissues, there might be several ways or materials to use other than those found in nature.
Artificial jellyfish made from rat cells
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