This detailed new edition gathers a comprehensive collection of methods, protocols, and procedures used for the identification, characterization, and selection of cancer stem cells. New chapters focus on the latest technologies that have improved our knowledge in this field, such as organoids, machine learning, nanoparticles, and other recent advances. 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 and readily reproducible laboratory protocols, as well as tips on troubleshooting and avoiding known pitfalls.