BIOL 140 Biology of the Human Immune System: Health and Disease What causes illness and maintains health How does the immune system guard against disease These and other important topics of health are discussed. The effects of diet, stress, and drugs are debated, with discussions of AIDS, genetics, cancer, and other related current topics. Students learn to make sound decisions regarding their bodies. Students complete projects integrating their major field of study with topics in health and illness. Laboratory work is a required component of the course.