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Medical Term:


Pronunciation: har'pin


  1. The structure formed by a polynucleic acid by base-pairing between neighboring complementary sequences of a single strand of either DNA or RNA.
  2. The structure seen in a prostaglandin where two segments of the molecule fold back on one another.
© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.