ER Cytosol Ribosomes (image) Duke University Share Print E-Mail Caption A color-enhanced electron micrograph shows the nucleus of a cell (blue) adjacent to the rough endoplasmic reticulum (green), where proteins are manufactured from mRNA templates produced by the nucleus. Credit University of Edinburgh, via the Wellcome Trust Usage Restrictions Please credit University of Edinburgh, via the Wellcome Trust. 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.