Christopher J. Stefan is a Senior Research Associate in the Weill Institute for Cell and Molecular Biology at Cornell. He received a Ph.D. in Molecular Cell Biology and Biochemistry from Washington University School of Medicine in 1998. Prior to joining Cornell University, he held positions at the University of California, San Diego School of Medicine (American Cancer Society Postdoctoral Research Fellow, 1999-2002) and the Howard Hughes Medical Institute (2003-2007). Dr. Stefan's research focuses on the regulation of cell signaling and membrane trafficking pathways, with emphasis on phosphoinositide lipid-dependent pathways in endocytic internalization and cell-surface receptor down-regulation.