Kathryn Grandfield, McMaster University (IMAGE) University of British Columbia Caption Study co-author Kathryn Grandfield, a professor of materials science and engineering, and biomedical engineering at McMaster. Credit Kareem Baassiri, McMaster University, Faculty of Engineering Usage Restrictions with 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.