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Physics 19 Online
OpenStudy (anonymous):

The skin is a body defense mechanism because it: produces white blood cells is protected by acidic secretions secretes special T cells to kill bacteria all of the above

OpenStudy (anonymous):

@NathanKinser

OpenStudy (anonymous):

would this be D? Or C?

OpenStudy (anonymous):

i would probably say all of the above

OpenStudy (anonymous):

ok thank you

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