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Questions and Answers
Which of the following is true about autoimmunity?
Which of the following is true about autoimmunity?
- It is caused by antibodies against foreign antigens.
- It may cause tissue injury through antibodies against self antigens or T cells reactive with self antigens. (correct)
- It is estimated to affect 1% to 5% of the population in developed countries.
- It only affects systemic tissues and organs.
What is the prevalence of autoimmune diseases in developed countries?
What is the prevalence of autoimmune diseases in developed countries?
- Less than 1%
- 20% to 25%
- 5% to 10% (correct)
- 10% to 15%
How are autoimmune diseases characterized?
How are autoimmune diseases characterized?
- They may be organ-specific or systemic, with widespread tissue injury and clinical manifestations. (correct)
- They do not cause tissue injury.
- They only affect a few organs.
- They are caused by antibodies against non-self antigens.
