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Cdouglassfl

Answer:

A- White blood cells

Explanation:

The immune system includes certain types of white blood cells. It also includes chemicals and proteins in the blood, such as antibodies, complement proteins, and interferon. Some of these directly attack foreign substances in the body, and others work together to help the immune system cells.

mboggs132

Answer: White Blood cells

Explanation: Lymphocytes are the type of white blood cell that help protect your body from harmful bacteria and infection. White Blood cells are a vital part of your lymphatic system. There are two main kinds of Lymphocytes. T cells and B cells.

B cells: These cells produce antibodies. Antibody's will attach themselves to an antigen making it easier for immune cells to destroy.

T cells: These cells ATTACK antigens. They also release a chemical known as Cytokines. This helps control the entire immune response.

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