Some organisms evade the immune response by changing the antigens expressed on their surface during the course of an infection.

Question

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Organisms such as certain bacteria, parasites, and viruses can alter the antigens on their surface to evade detection and destruction by the host's immune system, a process known as antigenic variation. This allows them to persist in the host and potentially cause chronic infections.

Some Organisms Evade the Immune Response by Changing the Antigens