Immunology is a branch of biology that studies immune systems and malfunctions of the immune system such as in immune deficiencies, autoimmune diseases, hypersensitivities and transplant rejection. A key area of medical management is the study of transplant rejection in which the immune system attempts to destroy allografts leading to transplant failure. This results in an immediate need to remove the organ from the recipient. The risk of such a rejection can be determined by measuring the panel reactive antibody level. To prevent this, serotyping is done to determine recipient-donor transplantation suitability and immunosuppressant drugs are used. This book unfolds the innovative aspects of transplantation immunology, which will be crucial for the progress of this field in the future. It strives to provide a fair idea about this discipline and to help develop a better understanding of the latest advances within this field. It is a complete source of knowledge on the present status of this important field.