This year's Sisson Memorial guest lecturer is Dr. Jeffrey Gordon. Dr. Gordon is visiting us from Washington University School of Medicine in St. Louis where he is the Dr. Robert J. Glaser Distinguished University Professor and Director of the Center for Genome Sciences and Systems Biology. His lecture, entitled "Childhood Undernutrition and Gut Microbiota Immaturity: Human Development Viewed from a Microbial Perspective" begins at 2:30 pm in UNB 2.228.