title: Bringing Koch's postulates to the table in IBD.
abstract: In this issue of Cell Host & Microbe, Bloom and colleagues elegantly show that commensal Bacteroides species fulfill Koch's postulates for inflammatory bowel disease in a host-genotype-specific way. This study showcases the use of a non-germ-free mouse model to identify specific members of the microbiota involved in disease development.
authors.affiliation: Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
authors.forename: Rosana B R
authors.initials: RB
authors.lastname: Ferreira
authors.forename: Benjamin P
authors.initials: BP
authors.lastname: Willing
authors.forename: B Brett
authors.initials: BB
authors.lastname: Finlay