SRL for [Cy3 - Py - Im polyamide and Cy5 - Py - Im polyamide]: We conjugated the two Py - Im polyamides with a cyanine dye , either Cy3 or Cy5 , and used the conjugates [Cy3 - Py - Im polyamide and Cy5 - Py - Im polyamide] as a fluorescence donor - acceptor pair .
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