Scientists used spinach leaves to make human heart tissue. https://t.co/zlr9RzAAeP http://pic.twitter.com/I3I9IFle5b — U.S. News (@usnews) March 28, 2017
Scientists used spinach leaves to make human heart tissue. https://t.co/zlr9RzAAeP http://pic.twitter.com/I3I9IFle5b
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