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Tmi32 Tmi32
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6 years ago
The amino acid arginine is important for proper erectile functioning because ____.
 
  a. it gets converted into zinc
  b. it gets converted into nitric oxide
  c. directly facilitates the generation of cGMP
  d. it acts as an inhibitor of phosphodiesterase-5
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trm1986trm1986
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6 years ago
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Tmi32 Author
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6 years ago
Good timing, thanks!
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Yesterday
Thanks
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2 hours ago
this is exactly what I needed
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