1. One purpose of lymph nodes is to:

2. A role of immunoglobulin G (IgG) is to:

3. Cytokines are chemical messengers which:

4. Lymphoid organs include the

5. The thymus is where T-cell lymphocytes:

6. Which of the following is an example of naturally acquired active immunity?

7. Which of the following are characteristics of free macrophages and microphages?

8. B-cell lymphocytes mature in the:

9. The majority of lymph fluid in the body returns to the venous circulation via the

10. Phagocytosis takes place in: