Hypochromism accompanying purine-pyrimidine association interactions.
D000225:Adenine / Q000032:analysis*; D003596:Cytosine / Q000032:analysis*; D004247:DNA; D006147:Guanine / Q000032:analysis*; D009705:Nucleosides / Q000032:analysis*; D011687:Purines; D011743:Pyrimidines; D013057:Spectrum Analysis; D014466:Ultraviolet Rays; D014498:Uracil / Q000032:analysis*
D009705:Nucleosides; D011687:Purines; D011743:Pyrimidines; D014498:Uracil; D006147:Guanine; D003596:Cytosine; D004247:DNA; D000225:Adenine