Chloroplasts Associated with Nucleus (image) University of Exeter Share Print E-Mail Caption These are chloroplasts (coloured red) associated with a nucleus. The nucleus appears green due to the fluorescent hydrogen peroxide sensing protein (HyPer). Credit University of Exeter Usage Restrictions This image may only be used in reports of this research 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.