Science image (IMAGE) Salk Institute Caption Human blood cells following reduced expression of the gene DNMT3A. The cell nuclei (large green structures) inside the cytoplasmic protein (red). Some mitochondrial DNA (small green dots) has escaped into the cytoplasm, inducing an inflammatory response. Credit Isidoro Cobo of UC San Diego Usage Restrictions with credit and related coverage. License Original 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.