Basophils: Are white blood cells that fight infection

Basophils are white blood cells that fight infection and allergies. Learn about their anatomy, role, normal and abnormal ranges, and conditions that affect them. Learn about the normal range and significance of basophil count, including causes of high and low levels, and interpretation of blood tests. Basophils are nonphagocytic granulocytes that are the least common leukocytes occurring in the blood circulation and are critical to the immune response against parasites. Basophils are a kind of white blood cell in the body. Learn more about the role of basophils and their different functions.