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1.The immune response requires a team effort. How do the specific and non-specific defenses work together? EXPLAIN YOUR ANSWER.

2.Human Immunodeficiency Virus (HIV) is a virus that infects (and destroys) Helper T Cells. As a result, people who are HIV+ generally have a low number of these T Cells. How would a dramatic decrease in Helper T Cells affect a person’s immune response? Be specific using details from what you learned about the immune response.

3.If a doctor wanted to run a blood test to determine whether or not a person was immune to the measles virus, would they need to look for measles antigens or measles antibodies? EXPLAIN YOUR ANSWER.