dbrushett15 dbrushett15
  • 06-04-2022
  • Biology
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What are the three categories of the 2nd line of defence in the immune system?

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bigbrainbillyboi bigbrainbillyboi
  • 06-04-2022

Answer:The immune system's three lines of defense include physical and chemical barriers, non-specific innate responses, and specific adaptive responses.

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