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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Biomaterials. 2008 Oct 5;30(2):254–265. doi: 10.1016/j.biomaterials.2008.09.027

Figure 1.

Figure 1

Distribution of DNA/PEI polyplexes inside the PEG hydrogel. DNA labeled with TM-rhodamine was used to form the polyplexes prior to encapsulation inside the gel. Polyplexes made with 15 µg DNA/100 µL gel at N/P = 7.5 (A), 30 µg DNA/100 µL gel at N/P = 7.5 (B), 50 µg DNA/100 µL gel at N/P = 7.5 (C) and 15 µg DNA/100 µL gel at N/P = 15 (D) were encapsulated inside the hydrogel scaffold. Confocal microscopy was used to take the images using a 40x objective over a 20 µm thick section. Scale bar equals 10 µm.