Immunotherapy as a therapeutic option for cancer therapy has contributed immensely to the success gained so far in the fight against cancer. Notwithstanding, the use of immunotherapy is not a common practice in most health facilities that handle cancer cases, and can be attributed to the fact that these immunotherapeutic agents are usually expensive compared to alternative options. This book therefore discusses the possible formats used in developing immunotherapeutic agents. Introduction and the first three chapters introduce the reader to the general concept of cancer and the various forms of cancer. The common therapeutic options and their respective therapeutic agents are also covered under these chapters. This is necessary to equip novices with basic knowledge about cancer and bring them to an appreciable level of understanding with respect to the concept of immunotherapy. Chapter four explains the various formats for developing immunotherapeutic agents as well as applications of these agents. This book will diffuse the perception that developing immunotherapeutic agent is a herculean task if not impossible, and also whip up your interest immunotherapy.