This detailed book encapsulates the most up-to-date methods of the intestinal stem cell field and provides guidance on a variety of techniques for studying intestinal stem cells properties. Beginning with a section on in vitro techniques to study different aspects of the intestinal stem cell functions by innovative imaging and functional assays, the volume continues with chapters detailing the single-cell transcriptional profiling method, the isolation of intestinal crypts to generate and establish 3D organoids, as well as different animal models of gastrointestinal cancer and examples of the use of in vivo methods for studying intestinal tumor-initiating cells or cancer stem cells. 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.