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(A) Normalized chromatograms of unstructured polypyrimidine d(Tn) oligonucleotides. (B) Plot of the molecular weight decimal logarithm against the relative elution volume for unstructured polythymidilate (d(Tn), circles) and polyadenylate (d(An), squares) tracts. The two sets are linearly fitted independently (solid lines; dashed lines: 95% confidence bands).
