New Columbia Engineering Cell Therapy Aids Heart Recovery--Without Implanting Cells (image) Columbia University School of Engineering and Applied Science Share Print E-Mail Caption Recovery of the injured heart muscle after 4 weeks of treatment with extracellular vesicles. Immunostains: wheat germ agglutinin (red), troponin (green) and DAPI (blue). Credit Gordana Vunjak-Novakovic/Columbia Engineering Usage Restrictions Please use the credit: Gordana Vunjak-Novakovic/Columbia Engineering 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.