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22-10-2020
Health

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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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aubreya22008 aubreya22008

22-10-2020

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

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