Fig. 1From: Lipid nanoparticles loading triptolide for transdermal delivery: mechanisms of penetration enhancement and transport propertiesTEM micrographs of TPL-NLC (a, ×20,000), DLS analysis of TPL-NLC (b, ×50,000), TEM micrographs of TPL-SLN (c), DLS analysis of TPL-SLN (d). In vitro permeation profiles of TPL-NLC and TPL-SLN (e). Each value is represented as the mean ± SD (n = 5)Back to article page