Mitochondrial DNA (IMAGE) Johns Hopkins Medicine Caption This image shows mitochondrial DNA from the snake adrenal gland, where the mitochondrion is adjacent to a highly ordered array of endoplasmic reticulum. Credit Image by John Long. Used with permission from 'The Cell, 2nd Ed.' by Don W. Fawcett, M.D. (Figure 227) 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.