An eosinophil is a white blood cell involved in controlling infections. it is surrounded by red blood cells that carry oxygen. the white blood cell is part of the , while the red blood cells are part of the system.

White blood cell - immune

Red blood cell - Circulation.

Explanation:

Blood is composed of the formed elements and the plasma. The formed elements of blood are red blood cells, white blood cells and platelets. The plasma contains proteins and ions.

The white blood cells contain eosinophils, neutrophils and the B cells and T cells that plays an important role in the immune system. The white blood cells protect the body from the pathogens. The red blood cells are involved in the circulation process of the body that carries the material and products from one side of the body to another.

Thus, the answer is White blood cell - immune

Red blood cell - Circulation.

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