Immuno-oncology and immunotherapy, Part E, Volume 199 in the Methods in Cell Biology series, highlights new advances in the field, with this new volume presenting interesting chapters on a variety of timely topics, including an Evaluation of agents that affect anti-tumor function of CD8+ T cells at activation, Cancer cyro-immunotherapy: Models and methods, Methods for analysis of cancer- and TLS-associated immune infiltrates by multiplex immunofluorescence histology, In-vivo measurement of the extracellular ATP concentration by bio-luminescent probes, and much more. Additional sections cover the Analysis of the tumor microenvironment using imaging mass cytometry data, Saphenous vein blood collection for different immune analyses of living mice, Use of mouse KO models to validate the specificity of monoclonal antibodies, Imaging mass cytometry to analyze the immune TME, Autoimmune arthritis: Transgenic mouse models and methods, Assessment of human and mouse tumor-antigen specific CD8+ T cells by multimer staining in multiple compartments, and more.