Preparation and characterization of baicalin-sanguinarine ion-pair chitosan nanoparticles Preparation and characterization of baicalin-sanguinarine ion-pair chitosan nanoparticles Studies on cetyl-chitosan nanosphere as carriers for paclitaxel Preparation technology of recombinant hirudin-2 nasal nanoparticles Preparation technology of recombinant hirudin-2 nasal nanoparticles