Answer:
B.
Explanation:
Macrophages are specialized cells involved in the detection, phagocytosis and destruction of bacteria and other harmful organisms. In addition, they can also present antigens to T cells and initiate inflammation by releasing molecules (known as cytokines) that activate other cells.
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Answer:
A. initiating an immune response
B. alerting the body of foreign invasion
C. removing harmful substances
Explanation:
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