8Li X,Kong X,Shi S,et al.Preparation of alginate coated chitosan microparticles for vaccine delivery.BMC Biotechnol.2008;8:89.
9Kara F,Demirel G,Tumturk H.Immobilization of urease by using chitosan–alginate and poly(acrylamide-co-acrylic acid)/j-carrageenan supports.Bioprocess Biosyst Eng.2006;29:207-211.