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  • Um, excuse me, Mr. Hol, but how does our skin protect us from pathogens?
  • Well, you asked the right person, since I am a science teacher. The skin protects us from pathogens by forming a barrier with pores too small for them to enter in. This helps the germs from going in out bodies.
  • Oh, thanks! I was wondering if you can answer another question: What does our white blood cells do and how do they kill germs?
  • Of course I can. White blood cells are vital for killing invading germs that can harm out body. They kill germs by first trapping them, and them blasting them with enzymes.
  • Thanks! Now, for the final question, what is an antibody and how does it work?
  • Thanks, Mr. Hol! Bye!
  • Well, an antibody is a blood protein that is produced in response to a specific antigen. It works by combining with other substances through a chemical change which the body can recognize as alien, or doesn't belong.
  • See you later!
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