IMMUNOLOGY

Detailed explanation-1: -Phagocytes are bone marrow-derived cells of myeloid origin, including neutrophils, eosinophils, basophils, monocytes, and the mature form of the monocyte.

Detailed explanation-2: -Polymorphonuclear neutrophils (PMNs) and monocyte/macrophages (MMs) are professional phagocytic cells that are able to phagocytose and destroy infectious agents. Therefore, they are key anti-infectious actors in host defense but can mediate tissue damages.

Detailed explanation-3: -A phagocyte is a cell that is capable of engulfing extracellular particles (such as a virus or bacterium) and digesting them inside the cell. Monocytes, neutrophils, and eosinophils are all white blood cells that are capable of phagocytosis.

Detailed explanation-4: -Eosinophils (acidophils) They are phagocytic and engulf antibody-coated or marked foreign substances. Their primary mode of attack is the exocytosis of toxic compounds, including nitric oxide, and cytotoxic enzymes, onto the surface of their targets.