Paper Assay (IMAGE) Oregon State University Caption This approach is used to prepare a paper assay that can tell whether a common drug used to treat malaria is genuine. Credit (Graphic courtesy of Oregon State University) Usage Restrictions None 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.