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coolio567 coolio567
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Posts: 334
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6 years ago
The cells of the immune system secrete substances that mediate the immune response that are called:
 
  1. antigens.
  2. masts.
  3. cytokines.
  4. antibodies.
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liuyihanliuyihan
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6 years ago
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This verified answer contains over 130 words.
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coolio567 Author
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6 years ago
You make an excellent tutor!
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Yesterday
Smart ... Thanks!
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2 hours ago
this is exactly what I needed
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