Biology, 26.07.2019 09:00 pressure772

As a defense mechanism against pathogens, mucous membranes a. cover all of the body's surfaces to act as an impenetrable barrier b. line internal body surfaces that contact the environment c. produce antibodies to combat infection d. secrete sweat, which has antibacterial enzymes

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As a defense mechanism against pathogens, mucous membranes a. cover all of the body's surfaces to ac...