A _________ is a natural substance produced by specialized cells in one location of the body that influences the activity or physiology of cells in a different location.

0 votes
     amino acid
      hormone
      protein
      polypeptide
asked Jun 29, 2012 in Anthropology by anonymous
    

1 Answer

+1 vote
hormone
answered Jun 30, 2012 by Bioshare ~Top Expert~ (34,070 points)



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