Zheqin (Paul) Cai, MD, PhD, Assistant Professor of Medicine. Dr. Cai received his MD degree from Beijing Medical University and was practicing as an academic cardiovascular surgeon in China before emigrating to the US in 1996. He received a PhD in Pharmacology from the Medical College of Georgia in 2001, studying nitric oxide production in inner medullary collecting duct cells, and winning an award from the American Society of Pharmacology and Experimental Therapeutics for this work. He then came to Hopkins as a postdoctoral fellow in Gregg Semenza’s laboratory and was promoted to Instructor and then Assistant Professor after joining the Becker laboratory. His major interest is defining the mechanisms responsible for ischemic preconditioning, particularly the role of the protein phosphatase PTEN. He has applied his surgical skills to set up a state of the art in vivo mouse infarction model in the laboratory which serves as a core resource for investigators interested in studies of myocardial infarct size.