1. Overview of the Immune Response 2. Signaling and Adhesive Molecules of the Immune System 3. Innate Immunity 4. Adaptive Immunity and the Detection of Infection by T Lymphocytes 5. Activation and Effector Actions of T Cells 6. B Cells and Humoral Immunity 7. Development of Lymphocytes and Selection of the Receptor Repertoire 8. Specialized Lymphocytes in Early Responses and Homeostasis 9. The Immune Response to Bacterial Infection 10. The Immune Response to Viral Infection 11. The Immune Response to Fungal and Parasitic Infection 12. Tolerance and Autoimmunity 13. Allergy and Hypersensitivity 14. Transplantation Immunology, Tumor Immunity and Vaccination