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CD spectra of pure DNA and DNA-PAMAM dendrimer complexes in HEPES (pH 7.3). Free DNA (solid line); DNA-0% acetylated dendrimer (squares); DNA-15% acetylated dendrimer (circles); DNA-25% acetylated dendrimer (diamonds); DNA-50% acetylated dendrimer (up triangles); DNA-70% acetylated dendrimer (down triangles).
