d. Macrophages kills cells infected with an intracellular pathogen such as a virus or bacterium
In the field of biology, macrophages can be described as immune cells that are majorly involved in detecting microorganisms such as bacteria and viruses, phagocytosing them and causing them to become destroyed.
Another important function of the macrophages is to activate the T cells so that an inflammatory response can be generated by the body at the site of the antigen or bacteria.
Macrophages engulf foreign particles such as bacteria or viruses in order to destroy them.
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