Hyaluronicacid(HA)isnaturallyhighmolecularweightpo,recognitionandsignalingrolesinan(Weigeletal ﹒ 1997,DeAngelis,1999,JingandDeAnge lis,2004)﹒ HAhasapplicationsinophthalmiatri,orthopaedics,woundhealingpromoting。Tissue engineering,drugdelivery,cosmetics,and ......