The need for self recognition -- Antigens and receptors -- Barriers to infection -- Cells of the innate immune system -- Innate immune function -- Molecules of adaptive immunity -- Cells and organs -- Generation of immune diversity: lymphocyte antigen receptors -- Lymphocyte development -- Lymphocyte activation -- Lymphocyte function -- Regulation of adaptive responses -- The well patient: how innate and adaptive immune responses maintain health -- Hypersensitivity reactions -- Immune deficiency -- Autoimmunity -- Transplantation -- Immune pharmacotherapy -- Tumor immunity -- Measurement of immune function.