Associate Professor Sam Brown, Bacterial Virulence and Evolution (image) Georgia Institute of Technology Share Print E-Mail Caption Principal investigator Sam Brown holds a petri dish of common infectious bacteria in his lab at Georgia Tech. Credit Georgia Tech / Christopher Moore Usage Restrictions For use in reporting on this topic and on research at Georgia Tech. 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.