title: Procedures for the analysis of purines and pyrimidines by elution from columns of sulfonated polystyrene with buffers of pH 4.
mesh_terms: D002021:Buffers; D011137:Polystyrenes; D011687:Purines / Q000737:chemistry*; D011743:Pyrimidines / Q000737:chemistry*
chemical_list: D002021:Buffers; D011137:Polystyrenes; D011687:Purines; D011743:Pyrimidines; C003321:polystyrene sulfonic acid; C030985:purine
keywords: PURINES/chemistry; PYRIMIDINES/chemistry