Hyaluronan(HA),awidelydistributedglycosaminogly structuralcomponentofextracellul [ 1 ],hasmanybiologicalandphysio logicalfunctions,andpharmaceuticalscontainingHAwi × 103 to5000 × 103havebeenusedinclinics ﹒ Inrecentyears。Withenzy maticmethodssuchasusinghya ......