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. Author manuscript; available in PMC: 2018 Oct 15.
Published in final edited form as: Acta Biomater. 2017 Sep 1;62:167–178. doi: 10.1016/j.actbio.2017.08.038

Figure 1.

Figure 1

Polyplex activity studies. Polyplex-containing collagen gels were preincubated at 37°C in media containing a range of serum concentrations (0.25%–50% (v/v)) for up to 2 weeks. NIH/3T3 cells were plated onto the preincubated gels and treated with TNF-α to stimulate MMP expression. The data represent the luminescence in the media due to luciferase expression by the cells after 4 d on the gels. Each data point represents the mean +/− standard deviation for a total of eight separately prepared and analyzed samples.