Human dermal LECs and adipose-derived mesenchymal stem cells (ASCs) were obtained from PromoCell (Heidelberg, Germany) and stained in chamber slides for Prox1, Ki67 (Abcam), p-AKT (Cell Signaling Technology, Danvers, MA, USA) and VEGFR-3 (EMD Millipore, Billerica, MA, USA). Cell signal intensity was quantified using MetaMorph (Molecular Devices, Sunnyvale, CA, USA). Western blot analysis for VEGFR-3 (Abcam), p-AKT and p-eNOS (Cell Signaling Technology) was performed with total cellular protein harvested from LECs and quantified with NIH Image J.19 (link)