1. The Reticuloendothelial System and Tissue Injury.- 2. T-Cell-Mediated Injury.- 3. Tissue Damage Caused by the Direct and Indirect Action of Complement.- 4. Macrophage-Mediated Injury.- 5. Immunity to Facultative Intracellular Parasites.- 6. Immunopathology of Mycotic Infections.- 7. Mechanisms of Viral Immunopathology.- 8. Immunopathology of Malignant Disease in Experimental Animals: Virus-Induced Tumors.- 9. Immunopathology of Malignant Disease in Mice: Leukemias and Lymphomas, Stalking-Horses for Human Counterparts.- 10. Immunopathology of Malignant Disease in Humans.- 11. The Autoimmune Diseases.- 12. Immunopathology of Immune Complex Disease.- 13. Late Inflammatory Reactions Induced by IgE Antibodies.- 14. Immunopathology of Delayed Hypersensitivity.