SHInjection:SOFAST ,2mLcontaining20mgSH,whichhasameanmolecularweight rangeof(1.5~2 ﹒.TwokindsofHAjellypreparationswer randomizedandinjectedintothetend SHGelIpreparedfromcockscomb(20mg/mL)wasforgroupAandSHGelIIpreparedby(20mg/mL)wasforgroup B . Thecontrol ......