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    Microbiology
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    Exam 9: The Bodys Defence Systems
  5. Question
    An Antigen Is
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An Antigen Is

Question 33

Question 33

Multiple Choice

An antigen is


A) any component of a foreign cell.
B) a foreign substance that activates the immune system.
C) a protein molecule synthesised by plasma cells.
D) a virulence factor of a bacterium that enables it to cause disease.
E) a gammaglobulin.

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