trockout7204 trockout7204
  • 11-11-2021
  • Biology
contestada

A(n) is a protein and/or sugar molecule on the surface of a cell that allows the immune system to identify whether or not that cell poses a threat.

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heatherlynshaver heatherlynshaver
  • 22-11-2021

Answer:

Antigen

Explanation:

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