21. The Immune System
Immune Tolerance
21. The Immune System
Immune Tolerance
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- Open Question
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.
- Open QuestionWhat are the three classes of lymphocytes, and where does each class originate?
- Open QuestionA decrease in which population of lymphocytes would impair all aspects of an immune response? (a) cytotoxic T cells, (b) helper T cells, (c) regulatory T cells, (d) B cells, (e) plasma cells.
- Open QuestionPerforins are proteins associated with the activity of (a) T cells, (b) B cells, (c) NK cells, (d) plasma cells.
- Multiple Choice
Where do T cells undergo central tolerance selection?
- Multiple Choice
What is immunological tolerance?
- Multiple ChoiceLymphocytes that develop immunocompetence in the thymus are __________.
- Multiple ChoiceAll of the following are examples of autoimmune disorders EXCEPT __________.