21. pH-sensitive chitosan-based nanoparticles for protein drug delivery: oral approaches: Original research article: a novel pH-sensitive hydrogel composed of carboxymethyl chitosan and alginate cross-linked by genipin for protein drug delivery, 2004 - PubMed
21. pH-sensitive chitosan-based nanoparticles for protein drug delivery: oral approaches: Original research article: a novel pH-sensitive hydrogel composed of carboxymethyl chitosan and alginate cross-linked by genipin for protein drug delivery, 2004