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Questions and Answers
Which of the following is NOT a major cause of T cell-mediated hypersensitivity reactions?
Which of the following is NOT a major cause of T cell-mediated hypersensitivity reactions?
- Excessive polyclonal T cell activation
- Autoimmunity
- Exaggerated responses to microbial antigens
- Inhibition of T cell recruitment (correct)
Which of the following is true about T cell-mediated autoimmune diseases?
Which of the following is true about T cell-mediated autoimmune diseases?
- They are not systemic
- They are not limited to a few organs (correct)
- They usually affect multiple organs
- They are directed against cellular antigens with widespread tissue distribution
What is the role of superantigens in T cell activation?
What is the role of superantigens in T cell activation?
- They inhibit T cell activation
- They activate T cells regardless of antigen specificity (correct)
- They bind to specific antigens on T cell receptors
- They stimulate a small number of T cell clones
