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Stanford University School of Medicine researcher Gregory Scherrer, PhD, assistant professor of anesthesiology, preoperative and pain medicine and of neurosurgery, center, with Elizabeth Sypek, right, a graduate student in neuroscience, and Dong Wang, left, PhD, in their lab in Palo Alto, California, Wednesday, January 11, 2017. (Photo by Paul Sakuma Photography/Stanford University School of Medicine)