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What is the body's first line of defense against bacteria and viruses? saliva, mucus, and hairs antibodies lymphocytes lymph nodes
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What is the body's first line of defense against bacteria and viruses? saliva, mucus, and hairs antibodies lymphocytes lymph nodes

User Juan Diego Antezana
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3 votes

Answer:

It's mucus

Step-by-step explanation:

User JBravo
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Well your skin is the first line of defense
User Peter Anselmo
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