Interactions of the graft copolymers of nucleic acid bases on polyethyleneimine with polynucleotides were studied. The backbone of the polymer is linear or branched polyethyleneimine. The nucleic acid bases are adenine and thymine. The polynucleotides used were polyadenylic acid (poly‐A) and polyuridylic acid (poly‐U). Interactions between these polymers were measured by ultraviolet (UV) absorption and the results were compared with the vinyl‐type nucleic acid model polymer.
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Overberger et al. (1979) studied this question.
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