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PT-K75 porcine mucosal fibroblast migration into a scratched area after 24hr incubation with SRL aliquots from pCD-β-MP and Dex-MP in serum starvation media from indicated release times (A) and free drug applied at pre-determined concentrations for control (B). n=9 measurements per group; * indicates p < 0.05 by t-test versus controls incubated with buffer alone; error bars represent standard error of the mean.
