Seeing Red (IMAGE) Rockefeller University Caption Photoreceptor cells (red) in the developing eye of a fruit fly initiate an unfolded protein response (yellow) to help them cope with a stressful environment. Misfolded proteins are implicated in many diseases, including neurodegenerative diseases, diabetes and types of blindness. Credit Rockefeller University Usage Restrictions None License Licensed 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.