Figure 5.
Cellular uptake of Rhodamine B-labeled polyplexes formed from PSIA and pDNA at the polymer to gene ratio (w/w) of 20 in COS-7 cells (A) and HepG2 cells (B) scale bar 50 μm.
Abbreviation: PSIA, polyspermine imidazole-4, 5-amide.
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