David Tobin, University of Washington (IMAGE) University of Washington Caption David Tobin, the lead author of a study on genetic susceptibility to tuberculosi stands in a zebrafish aquarium room at the University of Washington. Zebrafish are a model for studying TB. Credit Leila Gray Usage Restrictions For use only by news media and educational institutions. 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.