Fig. 7From: Lipid nanoparticles loading triptolide for transdermal delivery: mechanisms of penetration enhancement and transport propertiesCellular uptake of C-6 solution, C-6/SLN, C-6/NLC. a Intracellular distribution of the formulations in HaCaT cells. b, c: fluorescence intensity profiles of HaCaT cell treated with C-6 solution, C-6/NLC and C-6/SLN. Each value is represented as the mean ± SD (n = 3)Back to article page