Dr. John E. Hall, Arthur C. Guyton Professor and chair of the Department of Physiology and Biophysics, director of the Mississippi Center for Obesity Research and director of the Cardiorenal and Metabolic Diseases Research Center, will give theDepartment of Surgery and OB-GYN joint Grand Rounds Grand Rounds presentation, "The Legacy of Dr. Arthur Guyton and the UMMC Department of Physiology and Biophysics: Personal Reflections," at 8 a.m. Wednesday, Oct. 4, in R153.