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Dynamic light-scattering analysis (solid line) to assess colloidal stability of the lipoplexes. Size determination was performed after 1 hr of complexation at room temperature; lipoplexes from zones A and C were stable, whereas those from zone B exhibited a visible precipitate. Fluorescence measurements (dashed line) to assess DNA entrapment in the lipoplexes. BGTC/DOPE–DNA lipoplexes (A) and BGTC-DNA lipoplexes (B) at BGTC/DNA ratios ranging from 0 to 10.
