id author title date pages extension mime words sentences flesch summary cache txt cord-257722-7rmzaau4 Rhee, Joon Haeng Current and New Approaches for Mucosal Vaccine Delivery 2019-10-25 .txt text/plain 14120 678 31 Polymeric NPs are submicron-sized colloidal systems of natural or synthetic polymers used as delivery carriers of chemical drugs, proteins, peptides, and nucleic acids, owing to their high bioavailability, controlled release, biodegradable and biocompatible properties, and low toxic profiles [17] . Among the different polymers developed to formulate polymeric NPs, PLGA has won strong attention, owing to its attractive properties: biodegradability and biocompatibility, FDA and EMA approval in drug delivery systems for parenteral administration, well-described formulations and methods of production adapted to various types of drugs such as hydrophilic or hydrophobic small molecules or macromolecules, protection of the drug from degradation, the possibility of sustained release, the possibility of modifying surface properties to provide stealthiness and/or better interaction with biological materials, and the possibility of targeting NPs to specific organs or cells [29] . ./cache/cord-257722-7rmzaau4.txt ./txt/cord-257722-7rmzaau4.txt