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Cellular association of DNA. Radiolabeled DNA (0.5 μg per well) was complexed with varying amounts of SV40 and sSV40 peptides and Lipofectamine (10:1, w/w, lipid/DNA) for subsequent addition to NIH/3T3 cells. Amount of DNA associated was determined using a scintillation counter. All values are reported as mean±standard deviation (*** p < 0.05, **p < 0.01, ***p < 0.001).
