1 Deformable liposomes for skin therapy with human epidermal growth factor: The effect of liposomal surface charge Selenia Ternullo a , Purusotam Basnet b,c , Ann Mari Holsæter a , Gøril Eide Flaten a , Louis de Weerd d,e , Nataša Škalko-Basnet a, * a Drug Transport and Delivery Research Group, Department of Pharmacy, University of Tromsø The Arctic University of Norway, Universitetsveien 57, 9037 Tromsø, Norway b IVF Clinic, Department of Obstetrics and Gynecology, University Hospital of North Norway, Sykehusvegen 38, 9019 Tromsø, Norway c Women's Health and Perinatology Research Group, Department of Clinical Medicine, University of Tromsø The Arctic University of Norway, Universitetsveien 57, 9037 Tromsø, Norway d Department of Plastic and Reconstructive Surgery, University Hospital of North Norway, Sykehusvegen 38, 9019 Tromsø, Norway e Research Group for Medical Imaging, Department of Clinical Medicine, University of Tromsø The Arctic University of Norway, Universitetsveien 57, 9037 Tromsø, Norway * Corresponding author: Nataša Škalko-Basnet, Drug Transport and Delivery Research Group, Department of Pharmacy, University of Tromsø The Arctic University of Norway, Universitetsveien 57, 9037 Tromsø, Norway; Tel: +47-776-46640; Fax: +47-776-46151; Email: natasa.skalko-basnet@uit.no