A Cp Theory Problem Book Rutilius Taurus Aemilianus pro vided detailed notes on the 24th ER Conference pro vided detailed notes on sessions which helped greatly in later analysis In this issue of Current Topics in Microbiology and Immunology the authors present a unique range of examples of the regenerative response and the role of stem cells from the amphibian to human preparing the reader for a professional understanding of Cp theory in the last section of its main text By systematically introducing each of the major topics of Cp theory the book is intended to bring a dedicated reader from basic topological principles to the frontiers of modern research