Which WBC is typically responsible for combating parasitic infections?

Eosinophils play a critical role in the immune response, particularly in the defense against parasitic infections. These white blood cells are characterized by their ability to produce and release cytotoxic granules that contain enzymes and proteins designed to attack larger parasites, such as helminths (worms). Eosinophils also contribute to inflammatory responses and participate in allergic reactions, further indicating their importance in responding to parasitic challenges.

In contrast, while monocytes are involved in phagocytosis and can differentiate into macrophages that also help in immune defense, they are not specifically tied to the combat against parasitic infections as directly as eosinophils. Neutrophils primarily deal with bacterial infections and are the first responders to sites of inflammation but are less effective against parasites. Basophils play a role in allergic responses and inflammation but aren't specifically geared toward fighting parasitic infections either. This specialization of eosinophils makes them the most relevant cellular component in the context of parasitic diseases.