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Peptide nucleic acid (PNA) is a DNA mimic that binds strongly and specifically to complementary DNA or RNA oligomers, but in contrast to DNA its backbone does not carry any electric charge. We used voltammetry in cyclic and square-wave modes to study reduction and oxidation signals of single stranded (ss)PNA and DNA decamers and pentadecamers with the same base sequences at mercury and carbon electrodes...
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