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  1. Innate immune system defenses include

    2. A.

     Phagocytosis
    B.

     B cells
    C.

     Plasma cells
    D.

     T cells

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    Answer : Option A

    Explanation :

    When pathogens enter the body, the innate immune system responds with a variety of internal defenses. These include the inflammatory response, phagocytosis, natural killer cells, and the complement system.

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