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Biology 7 Online
OpenStudy (anonymous):

How are white blood cells able to recognize and bind to pathogens? A. Pathogens display antibodies which attract white blood cells. B. White blood cells bind to pathogens as well as all other cells. C. Pathogens display antigens which attract white blood cells. D. White blood cells are unable to recognize or bind to pathogens.

OpenStudy (anonymous):

is it C?

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