On the tautomeric states of guanine and cytosine.
D055598:Chemical Phenomena; D002621:Chemistry; D002852:Chromatography, Ion Exchange; D003201:Computers; D003596:Cytosine; D003597:Cytosine Nucleotides; D003903:Deuterium; D004578:Electron Spin Resonance Spectroscopy; D006147:Guanine; D006150:Guanine Nucleotides; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007536:Isomerism; D011522:Protons; D013696:Temperature
D003597:Cytosine Nucleotides; D006150:Guanine Nucleotides; D007477:Ions; D011522:Protons; D006147:Guanine; D003596:Cytosine; D003903:Deuterium