What is the main function of white blood cells (WBCs)?

Q. What is the main function of white blood cells (WBCs)?
Answer: To fight against infection
Notes: White blood cells (WBCs) are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. They are also called leukocytes. WBCs are found throughout the body, including the blood and lymphatic system.

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