This book aims to deliver the most up-to-date protocols in using epiblast stem cells (EpiSC) to answer critical questions on mammalian development. Beginning with a section on the spectrum of mouse primed pluripotent stem cells, the volume continues with chapters on toolkits to characterize and study primed stem cells, as well as primed stem cells to engineer gastrulation models. Written for the highly successful Method in Molecular Biology series, 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. Authoritative and practical, Epiblast Stem Cells: Methods and Protocols serves as an ideal guide to overcome the reproducibility problem by gathering detailed state-of-the-art protocols to perform comprehensive analyses, enabling the reader to opt for the appropriate cell type to model the epiblast.