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science
Updated: 10/5/2020
science
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Storyboard Text

  • A syringe is used to expose the body to a dead pathogen and its antigens once it has reached the blood stream
  • once the pathogen has entered the blood stream the body makes use of the third line of defense and sends out b cells to the area of the pathogen the third line of defense is used because the first and second have been bypassed.
  • The B cells make antibodies to then attach to the specific pathogen after this happens the body then has a new specific defense mechanism, then memory cells are made and if the memory cells recognize the same pathogen again it will know what antibody to use .
  • After the body has made immunity due to being vaccinated the body then may be exposed to this active pathogen but it knows how to fight it off
  • The pathogen has passed through the first 2 lines of defense then the third line of defense and then sends b cells to the pathogen that recognize the pathogen and can then attach to the pathogen
  • Once the Antibodies have locked onto the pathogen the other immune cells and the non specific defense mechanism help to kill the pathogen,
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