include all references and to always use your own words (no copying/pasting from other sources). 

Topic : the significance of Th1/Th2 responses to clinical outcomes.

• Briefly summarize the key characteristics of Th1 and Th2 cells: What cytokines do these cells produce? What types of resulting effector functions predominate?
• Describe one infectious disease or an autoimmune disease described for either animal models or humans, for which the Th1/Th2 response characteristics have been studied. (e.g. Leishmania in mice; leprosy in humans). What conclusions have been drawn from this study?
• Why do you think it is important to understand these responses? For example, what impact might this information have on drug and vaccine development? Explain your thinking.
• At the end of your report include an open-ended and provocative question that will inspire your classmates to respond to your report.