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Schematic diagram of a double-stranded nucleic acid. Yellow-green shaded circles represent phosphate; green-hatched circles represent pentose; red-slashed circles represent nitrogenous bases. Solid lines represent covalent bonds; dotted lines represent hydrogen bonds. Composed by User:Ceyockey based on image and text previously designed and uploaded by User:Smack. Ceyockey 13:49, 26 September 2005 (UTC)
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