IMMUNOLOGY

Detailed explanation-1: -A type of white blood cell, granulocyte, and phagocyte that aids in fighting infection. Neutrophils kill pathogens by ingesting them. Phagocytes eat up pathogens by attaching to and wrapping around the pathogen to engulf it. Once the pathogen is trapped inside the phagocyte, it is in a compartment called a phagosome.

Detailed explanation-2: -Macrophages engulf and kill bacteria. Although the overall role of macrophages has been known for over 100 years, we understand surprisingly little of the actual mechanisms by which bacteria are destroyed.

Detailed explanation-3: -A macrophage is by its nature malleable. It is able to adapt to any tissue, able to ingest most any sort of dead cell or foreign intruder, from bacteria to viruses to parasites.