Evolution of Bacteria (image) Instituto Gulbenkian de Ciencia Share Print E-Mail Caption These are E. coli bacteria with different antibiotic resistances (in yellow and blue) evolving. Credit Jorge Sousa, IGC. Usage Restrictions This image can only be used to illustrate articles related to this press release, and credit has to be given to the author. Share Print E-Mail 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.