YUVAL DOR, PhD, is a professor of biology at the Hebrew University Faculty of Medicine in Jerusalem, Israel. He earned his PhD in vascular biology at the Hebrew University with Eli Keshet, and trained as a post-doc at Harvard University with Doug Melton until 2004. He studies the molecular mechanisms by which cells regenerate and die. Much of his work focuses on beta-cells, most recently in the context of islet inflammation in early stage type 1 diabetes. He has also developed a novel blood test to study cell death in humans, using methylation signatures of cell-free circulating DNA.