Sample concentration 2.2 - 3.0 g/l solids, where 2.0 g/l excipients (DPPC and HA) solution and 0.1-0.5g DXA in PLGA nanoparticle suspension Solvent Water/Ethanol Carrier, Filmogen PLGA nanoparticles, Dipatmitoyl-phosphatidylcholine (DPPC) and Hyaluronic acid (HA)