Introductory Section.- History of Organ Transplantation.- Immunology of Organ Transplantation or Mechanisms of Allograft Rejection.- Current Concepts of Immunosuppression and Side Effects.- Common Infections in Transplants Including Clinical and Pathologic Features of Bacterial, Viral (CMV, BK, Adenovirus, and Herpes) and Fungal Infections (Including Histoplasma, Aspergillus, and Others)..- Posttransplant Lymphoproliferative Disorder and Other Neoplasms in Transplant Recipients.- Graft-versus-Host Disease in Transplant Recipients.- Kidney.- Liver.- Lung.- Heart.- Small Intestine.- Pancreas.