jekson6581 jekson6581
  • 08-02-2024
  • Biology
contestada

The immune system responds more swiftly by making antibodies to an antigen after the first exposure because?
1) The immune system becomes more efficient over time
2) The immune system recognizes the antigen more quickly
3) The immune system produces more antibodies after the first exposure
4) The immune system has a memory of the antigen

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