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Quantitative analysis of (a) 20 nm, (b) 40 nm, (c) 100 nm, (d) 500 nm nanoparticles at different anatomical regions and different time points. *p < 0.05 compared to contralateral ROI (contra), p < 0.05 compared to posterior ROI (posterior); Tukey’s post-hoc test. Error bars represents standard error of mean with n = 4 per group.
