Green fluorescent proteins (IMAGE) University of California - Riverside Caption Chloroplasts (magenta) in leaves expressing a green fluorescent protein. The DNA encoding for the protein was delivered by targeted nanomaterials without mechanical aid by applying a droplet of the nano-formulation to the leaf surface. Credit Israel Santana/UCR Usage Restrictions None License Original content 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.