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Twatson22 Twatson22
wrote...
Posts: 759
Rep: 0 0
6 years ago
The immune system ____.
 
  a. works by attacking anything recognized as foreign
  b. plays no role in fighting cancer
  c. often accelerates development of malignant cancers
  d. works by turning off specific genes in an individual's DNA
   e. is highly resistant to genetic modification
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wrote...
6 years ago
a
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