thermal perturbation differential spectra of several adenylic acid oligomers , two single-strand polyribonucleotides , poly ( a ) and poly ( c ) , and five trinucleoside diphosphates , u-a-a , u-a-g , u-g-a , c-u-c and c-u-a , were obtained and analysed .
C0032590
polyribonucleotides
C0032400
poly ( a