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. Author manuscript; available in PMC: 2014 Dec 23.
Published in final edited form as: ACS Nano. 2013 Nov 13;7(12):10.1021/nn403069n. doi: 10.1021/nn403069n

Figure 4.

Figure 4

Cellular uptake of [3H]DNA/polymer complexes over time. HeLa cells were treated with [3H]DNA/polymer complexes (containing 1 µg DNA) for 4 h under serum-free conditions, rinsed, and replaced with complete media for up to 20 additional h. The amount of internalized DNA as a function of total radioactivity (% total DNA) was determined for DNA alone (closed circles), PLL polyplexes (closed triangles), pHK10 polyplexes (open circles), and pHK15 polyplexes (open triangles). The data are represented as the mean ± S.D., n = 3.