This volume delivers a compendium of detailed protocols to the research community in order to aid in the investigation and discovery of Yersinia virulence mechanisms using important in vivo and in vitro infection models, which have led to major advances in the field and in our understanding of Yersinia pathogen-host interactions. Beginning with a section on mouse models, the book continues with chapters covering the monitoring of bacteria during infection, invertebrate models, as well as Yersinia interaction with immune cells and immune signaling. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols, and tips on troubleshooting and avoiding known pitfalls.