If a genetically predisposed individual encounters a novel environmental antigen, which consequence relating to the immune system is most likely to drive an autoimmune response?

💡 Explanation

Molecular mimicry can cause autoimmunity because the immune system may attack self-antigens that resemble the foreign antigen, therefore causing self-tissue damage, rather than solely targeting the foreign invader. Enhanced antigen presentation or increased regulatory T cell activity would typically suppress, not initiate, autoimmunity.

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