1. Describe the role of the macrophage in the immune response. 2. State the origin and purpose of lymphocytes. 3. Compare active natural immunity and passive artificial immunity, describing the...

1. Describe the role of the macrophage in the immune response.

2. State the origin and purpose of lymphocytes.

3. Compare active natural immunity and passive artificial immunity, describing the causative mechanism and giving an example.

4. What is the purpose of a booster vaccination?

5. Describe the purpose of gamma globulins.