21. The Immune System

When naïve B cells are activated, they differentiate into:

a. Plasma cells

b. Memory cells

c. Both a and b

d. None of the above

Name several cytokines and describe their role in the immune response.

On which type(s) of cells are class I MHC molecules located?

a. Antigen-presenting cells only

b. B cells only

c. All nucleated body cells

d. Antigen-presenting cells and B cells

Class I MHC molecules display_____antigens and activate_____cells. Class II MHC molecules display _____antigens and activate_____cells.