5.1.6 Lines of Defense


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  • When an antigen enters your body your immune system produces antibodies to fight the antigen. It is like a battle with the army (antibody) fighting off the invader (antigen).
  • Aprils T- cells , B- cells and phagocytes are working to stop the antigens, to help April get better.
  • April is starting to feel better. Aprils body will not remember the type of antigen that entered her body. She will most likely get strep throat again, this is called non specific defense.
  • If she gets sick again, Aprils, B-cells T-cells and phagocytes will help her get better again. This process is called specific defense.
  • The next morning, April woke up feeling good as new. Thanks to her antibodies!
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