17-07-2017
Biology

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What is the immune systems first line of defense against invading pathogens

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sariahurrutia sariahurrutia

17-07-2017

The first line of defense, includes physical and chemical barriers. These include your skin, tears, mucus, cilia, stomach acid, urine flow, bacteria and white blood cells called necrophiliacs.

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aliciavaldez890 aliciavaldez890

20-01-2022

Answer:

innate immunity

Explanation:

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