Identify how the physical barriers of the immune system protect the body against pathogens. Check all that apply.

Question

Revolt · Accepted Answer

skin contains tightly packed cells; skin is tough, flexible, and waterproof; you cough when a pathogen enters your mouth; you sneeze when a pathogen enters your nose

The Reproductive Process

Identify how the physical barriers of the immune system protect the body against pathogens. Check all that apply.

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