This is the first-and only-publication available which provides the most recent information in this particular field of biomedicine. Interleukin-2 (IL-2) and IL-2 activated killer cells have been shown to have a potential in the treatment of a variety of human malignant diseases. This work comprehensively summarizes basic aspects of IL-2 as well as its clinical application, therefore making all these aspects easily accessible to the readers. Because of the clinical significance of this molecule in the treatment of cancer, the basic and clinical investigations in the IL-2 field are rapidly expanding, together with the interest of the scientific and medical community. This book is an excellent educational and teaching tool for scientists, clinicians, and students. Those who already have expertise in research in the IL-2 area will find this reference indispensible.