Figure 8.
Viability of COS-7 cells (A) and HepG2 cells (B) treated with PSIA and PEI 25 kDa at various polymer concentrations.
Note: **P < 0.01 vs PEI 25 kDa.
Abbreviations: PSIA, polyspermine imidazole-4, 5-amide; PEI, polyethyleneimine.
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