What is the function of the system that is composed of the white blood cells, bone marrow, thymus, lymph nodes, spleen, tonsils, and adenoids?

White blood cells and organs such as the bone marrow, thymus, lymph nodes, spleen, tonsils, and adenoids are parts of the immune system. This system recognizes and fights germs that can cause disease, protecting the body from infection. Therefore, the correct choice is protection from infection.

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