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Larry is taking a walk in the park. The pollen in the air makes him sneeze constantly. What line of defense is his immune system exhibiting?
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2 votes
Larry is taking a walk in the park. The pollen in the air makes him sneeze constantly. What line of defense is his immune system exhibiting?

User Matt McClure
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2 Answers

4 votes
It is the first line of defense which consists of all the chemical based protection such as skin , tears , cilia, stomach acid, mucus and urine. This is the outside defense system.
User Ahmed Niri
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8.0k points
3 votes
The First Line of Defense is the correct answer :)
User Andrew Holmgren
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7.6k points
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