Which of the following conditions may lead to the development of autoimmunity?


a. Self antigens not previously encountered by T cells are released into the circulation.
b. Foreign antigens mimic self antigens.
c. Cells may inappropriately display class II MHC molecules.
d. Certain pathogens nonspecifically activate B cells.
e. All of the above are correct.

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.

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

Fill in the blanks: Class I MHC molecules display_____antigens and activate_____cells. Class II MHC molecules display _____antigens and activate_____cells.

Where do T cells undergo central tolerance selection?