the immune system

the immune system

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  • One kind of pathogen invades and passes the first line of defense in the immune system.
  • This kind of pathogen has a specific label (antigen).
  • This pathogen disguises itself from macrophages so that macrophages couldn't recognize them, therefore it passes the second line of defense, which is still innate.
  • As the pathogens get further, the adaptive immune system is stimulated by helper T cells signaling B cells and killer T cells.
  • The B cells come in and they have that antibodies that specifically bound to the antigen of that pathogen and chain them together.
  • The chained pathogens are disabled, and the macrophages pop in and digest them.
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