the influence of various parameters , such as ph , ionic strength and temperature , on the retention of different nucleotides and related compounds on copper chelate gels has been investigated in order to understand the respective roles played by the different solute constituents ( i.e. , heterocyclic bases , sugars and phosphate groups ) in the interaction and to define optimal conditions for subsequent application to the fractionation of oligo- and polynucleotides .
C0028953
oligo
C0032550
polynucleotides