Beating Heart Cells on Decellularized Spinach Leaf (video) Worcester Polytechnic Institute Share Print E-Mail Loading video... Caption A close-up of beating human heart cells cultured on a spinach leaf that has been stripped of its plant cells, leaving behind the leaf's vasculature. The research was conducted by engineers at Worcester Polytechnic Institute (WPI). Credit Worcester Polytechnic Institute Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.