Lting out, or solvent evaporation [39,40] methods . A huge amount of preclinicalLting out, or solvent evaporation [39,40] methods . A huge amount of preclinical studies have emphasized the utility of PLGA/PLA-based nanoparticles as drug and antigen delivery systems. It has been reported that PLGA/PLA-based nanocarriers, carrying immunostimulatory molecules and/or vaccine antigens, confer ant