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. 2002 May 1;30(9):e39. doi: 10.1093/nar/30.9.e39

Figure 1.

Figure 1

(A) Chemical structure of FAM-dR (R = FAM) and MeRed-dR (R = MeRed). (B) Chemical structure of Fam-cap-dU (R = FAM). (C) Chemical structure of methyl red (MeRed). (D) Chemical structure of fluorescein (FAM). (E) Schematic representation of the melting of oligonucleotides designed to show duplex melting: (i) a simple DNA duplex; (ii) the underlying duplex of a triplex. (F) Schematic representation of the melting of oligonucleotides designed to show triplex melting. (G) Schematic representation of oligonucleotides designed to show the melting of intra- and intermolecular quadruplexes. The folded structures show one of the possible forms that these quadruplexes can adopt.