Rising Star in Global Health (IMAGE) University of Alberta Caption Frédérique Deiss shows off a design concept of her idea for a paper-based test to detect pathogens in food and water. Credit Richard Siemens/University of Alberta Usage Restrictions Photo credit. 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.