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What defense mechanism helps to resist the invasion of infectious agents once they enter the body but when weakened increases the risk of infection
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What defense mechanism helps to resist the invasion of infectious agents once they enter the body but when weakened increases the risk of infection

User Ceoehis
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Answer:Natural barriers and the immune system defend the body against organisms that can cause infection. (See also Lines of Defense.) Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid.

Explanation:hope this helps:D happy early hallowen

User David Hunt
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