Which cells are known to be actively phagocytic?

Neutrophils, eosinophils, and monocytes are recognized as actively phagocytic cells in the immune system.

Neutrophils are among the first responders to site infections; they actively engulf and digest pathogens such as bacteria and fungi through the process of phagocytosis. They contain granules filled with enzymes and antimicrobial substances that help in breaking down the engulfed material.

Eosinophils primarily play a role in combating multicellular parasites and also contribute to inflammatory responses, especially in allergic reactions. While they are less efficient at phagocytosis compared to neutrophils, they can still engulf smaller particles and pathogens.

Monocytes circulate in the bloodstream and migrate to tissues where they differentiate into macrophages or dendritic cells, both of which are highly effective phagocytes. Macrophages, in particular, are known for their ability to engulf large particles, dead cells, and pathogens, playing a critical role in both innate and adaptive immunity.

The other choices consist of cells that either primarily function in adaptive immunity, such as B and T lymphocytes, or in mediating allergic responses and cytotoxicity, like basophils and natural killer cells, which are not primarily involved in phagocytosis. Thus