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Which sentences describe functions of the immune system? Choose all answers that are correct. A. Bones produce extra white blood cells to increase its defense against germs. B. The body filters the blood for waste materials. C. Cell membrane keeps germs from entering the cell. D. Lymphocytes create antibodies that attach to the germ.

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ashley16116
I believe it is A and D 

Option A and D describe functions of the immune system.

What is immune system in a body?

It is complex network of cells, tissues, organs, and the substances they make that helps the body fight infections and other diseases. The immune system includes white blood cells and organs and tissues of the lymph system.

The bone marrow produces 60 to 70 percent of the white cells (i.e., the granulocytes). The lymphatic tissues, particularly the thymus, the spleen, and the lymph nodes, produce the lymphocytes (comprising 20 to 30 percent of the white cells).

Lymphocytes get attach to the antigen in our body and kill them.

Learn more about immune system here:

https://brainly.com/question/6092790

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