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(A) Confocal laser microscope images of Raw264.7 cells treated with FITC-labeled HA-MSN, MSN, and free HA + FITC-HA-MSN for 2 h with (a) or without (b) LPS activation. (B) Mean fluorescence intensity of FITC-HA-MSN, FITC-MSN, and free HA + FITC-HA-MSN after cellular uptake (n = 3). Variance among groups was determined by one-way ANOVA with Tukey post-hoc test (*** p < 0.001, **** p < 0.0001).
