What are several defenses that keep pathogens from getting inside the body

Biology

1 answer:

lawyer [7]2 years ago

8 0

Answer:

The body has two lines of natural defense to protect against infection. The first are physical barriers, such as the skin, body secretions and mucous membranes. The second line of defense is the immune system. Specialized immune cells coordinate and execute attacks to kill germs that make it past the body's physical barriers.

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