Bacteria 'Clump' Model (IMAGE) Michigan Medicine - University of Michigan Caption This is a computer model of how bacteria traveling through the bloodstream clump together, which may explain how bloodstream infections resist antibiotics. Credit University of Michigan 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.