What Are White Blood Cells?
Reviewed: Dr. Gromatzky
3. Eosinophils
Eosinophils make up only around 5 percent of the white blood cells in the body, but still they perform a very important function. They are on the front line when unwelcome bacteria are detected, while they also help to keep us safe from parasites. They are also associated with cancer and a high eosinophil count can indicate a serious problem.
Eosinophils are perhaps noted for their association with allergies. When an allergen is detected, it is usually eosinophils that are responsible for the response that results in the symptoms of allergies. Allergic reactions can be deadly in a very small number of cases.
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