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Particle size, polydispersity index and ζ-potential of solid lipid nanoparticles (SLNs). (A) Particle size, (B) polydispersity index (pdi) and (C) ζ-potential values of different SLN suspensions: empty SLNs (SLN), SLNs loaded with rhodamine (SLN–RHO), SLNs loaded with dexamethasone (SLN–DEX) and SLNs loaded with hydrocortisone (SLN–HC). Data are shown as the mean ± SEM from five independent experiments.
