mitochondria (IMAGE) University of California - San Diego Caption In most cells, mitochondria (green) form complex tubular networks that help them distribute energy throughout the cell. Disruption of these mitochondrial networks is a hallmark of many human diseases. Credit UC San Diego Health Sciences Usage Restrictions Use photo credit 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.