Salk science image (IMAGE) Salk Institute Caption The microprotein PIGBOS (magenta) shown sitting on the outer membranes of mitochondria (green), where it is poised to make contact with other organelles in the cell. Credit Salk Institute/Waitt Advanced Biophotonics Core Facility Usage Restrictions with credit and related coverage. 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.