Introduction to the immune system. Properties and overview of immune responses ; Innate immunity ; Cells and tissues of the adaptive immune system -- Recognition of antigens. Antibodies and antigens ; The major histocompatibility complex ; Antigen processing and presentation to T lymphocytes ; Antigen receptors and accessory molecules of T lymphocytes -- Maturation, activation and regulation of lymphocytes. Lymphocyte development and the rearrangement and expression of antigen receptor genes ; Activation of T lymphocytes ; B cell activation and antibody production ; Immunological tolerance -- Effector mechanisms of immune responses. Cytokines ; Effector mechanisms of cell-mediated immunity ; Effector mechanisms of humoral immunity -- The immune system in defense and disease. Immunity to microbes ; Transplantation immunology ; Immunity to tumors ; Diseases caused by immune responses : hypersensitivity and autoimmunity ; Immediate hypersensitivity ; Congenital and acquired immunodeficiencies -- Appendix I: Glossary -- Appendix II: Principal features of selected CD molecules -- Appendix III: Laboratory techniques commonly used in immunology.