Which type of white blood cell is associated with allergic reactions?

Eosinophils are a type of white blood cell that play a significant role in the body's immune response, particularly in combating parasitic infections and responding to allergic reactions. These cells are distinguishable by their large granules that stain bright red with certain dyes, giving them a unique appearance under a microscope.

During allergic reactions, eosinophils contribute by releasing various inflammatory mediators, such as histaminases and other substances that help modulate inflammatory responses. For instance, they can neutralize the effects of histamine, which is released by basophils and mast cells during an allergic reaction, helping to ameliorate symptoms. Additionally, eosinophils proliferate in response to allergens, making them particularly relevant in conditions like asthma, hay fever, and other allergic diseases.

The other types of white blood cells mentioned do have important roles in the immune system, but they are not specifically tied to allergic reactions in the same manner as eosinophils. Monocytes primarily differentiate into macrophages and dendritic cells, focusing on phagocytosis and antigen presentation. Basophils do participate in allergic responses by releasing histamine, but their role is more about initiating the inflammatory process rather than directly combating the allergens. Neutrophils are