title: Simple micro ion-exchange chromatography procedures for the individual groups of pyrimidines and purines.
mesh_terms: D000225:Adenine / Q000302:isolation & purification; D002852:Chromatography, Ion Exchange / Q000379:methods*; D003596:Cytosine / Q000302:isolation & purification; D006147:Guanine / Q000302:isolation & purification; D011687:Purines / Q000302:isolation & purification*; D011743:Pyrimidines / Q000302:isolation & purification*
chemical_list: D011687:Purines; D011743:Pyrimidines; D006147:Guanine; D003596:Cytosine; D000225:Adenine