Overview of gut immunology / Katie Lynn Mason ... [et al.] -- The commensal microbiology of the gastrointestinal tract / Janet M. Manson, Marcus Rauch and Michael S. Gilmore -- Overview of the gastrointestinal microbiota / -- Vincent B. Young and Thomas M. Schmidt -- Effects of microbiota on GI health : gnotobiotic research / Robert Doug Wagner -- Positive interactions with the microbiota : probiotics / Marko Kalliomäki, Seppo Salminen and Erika Isolauri -- Negative interactions with the microbiota : IBD / Nita H. Salzman and Charles L. Bevins -- Diet, immunity and functional foods / Lesley Hoyles and Jelena Vulevic -- Host-microbe communication within the GI tract / Christopher A. Allen and Alfredo G. Torres -- Host-microbe symbiosis : the squid-vibrio association : a naturally occurring, experimental model of animal/bacterial partnerships / Margaret McFall-Ngai -- The "microflora hypothesis" of allergic disease / Andrew Shreiner, Gary B. Huffnagle and Mairi C. Noverr -- The damage-response framework of microbial pathogenesis and infectious diseases / Liise-anne Pirofski and Arturo Casadevall