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Argentina Argentina
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6 years ago
All of the following is TRUE about IgM except
 
  A) most efficient activator of complement via the classic pathway.
  B) first antibody class to be secreted in a primary infection.
  C) contains a secretory piece.
  D) is a pentamer.
  E) contains a J chain.
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hillaryanahillaryana
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6 years ago
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Argentina Author
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Brilliant
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Thanks for your help!!
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2 hours ago
This helped my grade so much Perfect
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