Live-virus, killed-virus, toxoid, and second-generation virus are all categories of (a) vaccines. (b) antigens. (c) preventive strategies. (d) antibiotics.

What is the role of phagocytes in the inflammatory response? (a) They prevent pus from building up. (b) They surround and destroy pathogens. (c) They trigger the production of T cells. (d) They cause blood vessels to expand.

If you receive antibodies from another person or an animal instead of producing them in your own body, it is called (a) communicable disease. (b) specific defense. (c) active immunity. (d) passive immunity.

Describe a virus. How does a virus damage a cell?

Some strains of tuberculosis have become resistant to which form of treatment? (a) Bed rest, (b) Surgery, (c) Dietary changes, (d) Antibiotics.