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    • Diagram showing T helper cell response to virus infection.
    Rights: The University of Waikato Te Whare Wānanga o Waikato Published 18 October 2010 Size: 630 KB Referencing Hub media

    Immune response is extremely complex. This illustration focuses on some ways T helper cells respond to virus infection. The T helper cell communicates with many cells, giving instructions to destroy the virus.

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      The body’s second line of defence

      If the pathogens are able to get past the first line of defence, for example, through a cut in your skin, and an infection develops, the second line of defence becomes active. Through a sequence ...

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