Ophélie Gourgas, McGill University (IMAGE) McGill University Caption Ophélie Gourgas, a McGill PhD student and one of the authors of the research paper, holds a sample that was analyzed at the CLS in the study of vascular calcification that leads to what's commonly called "the hardening of the arteries." Credit The Canadian Light Source (CLS) Usage Restrictions Please credit CLS 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.