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Answer: Innate Immunity
White blood cells are found in the innate immune system, which is found in all animals. It's called innate immunity because this kind of immunity is present at birth and the white blood cells react immediately in response to an foreign antigen.
White blood cells are found in the innate immune system, which is found in all animals. It's called innate immunity because this kind of immunity is present at birth and the white blood cells react immediately in response to an foreign antigen.
