Researchers Holding Vacuums (image) American Society for Microbiology Caption The vacuums the researchers are holding were among those that had bags and emissions assayed in the study. Other experimental equipment is in background. The researchers pictured are, L-R, Knibbs, Caroline Duchaine, and Congrong He. Credit researchers Usage Restrictions None 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.