title: Association of nucleotides with homoionic clays.
mesh_terms: D005075:Biological Evolution; D055598:Chemical Phenomena; D002621:Chemistry; D003854:Deoxyribonucleotides; D012265:Ribonucleotides; D012987:Soil
chemical_list: D003854:Deoxyribonucleotides; D012265:Ribonucleotides; D012987:Soil