Revealing essential roles of the tumor microenvironment in cancer progression, this book focuses on the role of hematopoietic components of the tumor microenvironment. Further, it teaches readers about the roles of distinct constituents of the tumor microenvironment and how they affect cancer development. Topics include eosinophils, NK cells, γδ T cells, regulatory T Cells, Langerhans cells, hematopoietic stem cells, Mast cells, B cells and Microglia, and more. Taken alongside its companion volumes, Tumor Microenvironment: Hematopoietic Cells – Part B updates us on what we know about various aspects of the tumor microenvironment as well as future directions. This book is essential reading for advanced cell biology and cancer biology students as well as researchers seeking an update on research in the tumor microenvironment.