Endosomal Uptake of Peptide Proteins (IMAGE) Cell Press Caption This is a two-color electron microscopy image of endosomal uptake of peptide proteins. Credit Adams et al./<i>Cell Chemical Biology</i> 2016 Usage Restrictions Credit Required. 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.