Figure 7.

Local persistence was tested after injection of both fluorescently labeled polymer microparticles in separate esophageal tissue samples (A) and exposed to simulated saliva flow conditions with remaining particles measured by fluorescence signal using IVIS (B). No significant particle leakage was observed from the injection site after flow. No significant differences were measured between the polymer microparticle types. n=3 replicates per time point; error bars represent standard error of the mean.