HighmolecularweightNaHA(HWNaHA)withMrof1.24 × 106,mediummolecularweight NaHA(MWNaHA)withMrof6.75 × 105andlowmolecularweightNaHA(LWNaHA)withMr of2.40 × 105wereobtainedfromabacterialstr。26695andJ99 wereincubatedonColumbiaagarsuppl sheepbloodcontainingtwofol ......