This third edition volume expands on the previous editions with new chapters discussing advancements in mass spectrometry resolution, sensitivity, and speed, including the refinement of the identification of peptides presented on the surface of major histocompatibility proteins. These technologies continue to advance vaccine development, as well as cancer immunotherapy and precision medicine. Furthermore, this new edition introduces new approaches for quantifying immune-active proteins and peptides and explores the increasing role of multi-omics strategies to help researchers further understand immune function. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge and comprehensive, Immunoproteomics: Methods and Protocols, Third Edition will help advance immune system research and support the development of new diagnostic and therapeutic strategies.