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Viruses have evolved multiple strategies to evade the host immune system, ensuring their survival and replication within the host. Four key mechanisms include antigenic variation, inhibition of antigen presentation, production of immune-modulatory proteins, and latency. Antigenic variation involves changes in viral surface proteins to avoid recognition by host antibodies, often seen in influenza viruses. Inhibition of antigen presentation allows viruses to interfere ______ ___ _______ ____ ________ __________ ________ ___ ______ ______ ________ ____.
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