BrandeeGunzenhaus871 BrandeeGunzenhaus871

14-10-2015
Biology

contestada

Which of the following are part of the body s first line of defense against pathogens?
a. white blood cells
b. red blood cells
c. lymph nodes
d. mucous membranes

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Rebecca0302 Rebecca0302

14-10-2015

The body's first line of defense is the mucous membranes

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