Membrane Potential (IMAGE) University of California - San Diego Caption Heterogeneity in membrane potential of Bacillus subtilis cells. Colors indicate membrane potential. Credit Süel Lab, UC San Diego Usage Restrictions Must be used in conjunction with Cell paper on bacteria and antibiotics resistance. 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.