Immunology Block 4 Q&A

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AUTOIMMUNITY
Q: In general, what causes autoimmunity?
A: Autoimmunity is due to a loss of tolerance, either from hormones, stress, or infection. It can be a loss of central tolerance or peripheral tolerance.
Q: What is tolerance?
A: Tolerance means in the presence of an antigen, the lymphocyte is unresponsive or goes through apoptosis.
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