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SnowQueen SnowQueen
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6 years ago
Which cells of the immune system are the first to attack invading viruses or bacteria?
 A) B cells
  B) dendritic cells
  C) macrophages
  D) T cells
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wpingwping
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6 years ago
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6 years ago
This site is awesome
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Thank you, thank you, thank you!
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Smart ... Thanks!
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