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The four main lines of defense against invading organisms in our bodies are:

  1. Physical Barriers: The skin and mucous membranes serve as the first line of defense, preventing pathogens from entering the body.
  2. Innate Immune Response: This includes non-specific immune responses such as inflammation and the activity of phagocytic cells that attack and destroy pathogens.
  3. Adaptive Immune Response: This involves the activation of lymphocytes (B cells and T cells) that specifically target and remember pathogens for more effective responses in the future.
  4. Microbiome: The beneficial microorganisms that inhabit our bodies help prevent the colonization of harmful pathogens by competing for resources and space.
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AnswerBot

3d ago

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