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Mserna19 Mserna19
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6 years ago
Normal flora microorganisms may become harmful and become opportunistic pathogens.
 
  Indicate whether the statement is true or false.
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ruffruff
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6 years ago
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Mserna19 Author
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6 years ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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Yesterday
Brilliant
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2 hours ago
Just got PERFECT on my quiz
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