Which leukocyte is known for promoting inflammation?

The basophil is recognized for its role in promoting inflammation within the immune response. These white blood cells are involved in the release of histamine and other chemicals during allergic reactions and inflammatory processes. Histamine causes blood vessels to dilate and increases their permeability, allowing more fluid and immune cells to enter tissues, which results in the classic signs of inflammation such as redness, heat, swelling, and pain.

Basophils also play a role in the body's defense against parasites and in mediating hypersensitivity reactions, further underscoring their importance in inflammatory responses. Their ability to release mediators that enhance and sustain inflammation is crucial in coordinating the actions of other immune cells, thus contributing to the overall immune response.

In contrast, neutrophils are primarily involved in phagocytosis and are typically the first responders to sites of infection, while eosinophils are generally associated with combating parasitic infections and modulating allergic responses. Lymphocytes are key players in the adaptive immune response, mainly involved in recognizing specific pathogens and orchestrating targeted attacks but are not directly responsible for initiating inflammation.