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The integumentary system _____. is the first line of defense against pathogens is made of white blood cells and lymph nodes identifies antigens and produces antibodies is part of the body's passive immunity
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The integumentary system _____.

is the first line of defense against pathogens
is made of white blood cells and lymph nodes
identifies antigens and produces antibodies
is part of the body's passive immunity

User Simdrouin
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3 votes

The first option. I had this test.

User Daniil
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6 votes
I would go with A it is the first line of defense as it is exposed to the outside world unlike the rest of your body.
User Algef Almocera
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