Scientist use spinach to grow human heart tissue

Scientists at Worcester Polytechnic Institute (WPI) in Massachusetts turned a spinach leaf into beating heart muscle. As you may have guessed, this experiment is groundbreaking.

Their work is set to be published in the May 2017 volume of Biomaterials.

According to a a video explaining the research WPI graduate student and study co-author Joshua Gershlak said they were inspired by the spinach's natural vein system.

The biomedical research team swapped the plant cells in the leaf for human ones, which turned the plant leaves into a delicate network of blood vessels.

After that, they sent fluids through the veins to prove that blood could flow -- and in the video, you can see the spinach heart pumping like a real human heart.

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