has part has grain has role sodium chloride sodium phosphate scattered molecular aggregate phosphate buffered saline solution PBS buffer PERSON: Philippe Rocca-Serra PERSON: Melanie Courtot PERSON: Tina Boussard PMID: 16279733.Dent Mater J. 2005 Sep;24(3):414-21.PBS buffer solutions with different pH values can change porosity of DNA-chitosan complexes. Phosphate buffered saline (abbreviated PBS) is a buffer solution commonly used in biochemistry. It is a salty solution containing sodium chloride, sodium phosphate and in some preparations potassium chloride and potassium phosphate. The buffer helps to maintain a constant pH. The concentration usually matches the human body (isotonic). WEB: http://en.wikipedia.org/wiki/Phosphate_buffered_saline phosphate buffered saline solution chemical solution buffer role ready for release