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Uptake (30 min) of 30 nm SLNs in the nasal olfactory (a) and respiratory (b) tissues pre-treated with endocytic inhibitors. Bar graphs display mean nanoparticle uptake ± standard deviation determined from the recovery of Nile Red from the tissues. Statistical comparisons were made between each of the inhibited tissues and control tissues using Student’s two-tailed t-test (p < 0.05). No statistically significant differences were found.
