Yamamoto [ 17 ] studiedthecurativeeffectofECM‐E(extracellularmatrixextractedfrom ercomb)onhumanandrats ﹒ ECM‐Ewasacomplexmucopolysaccharideco degradedHA ﹒ Ratsopenedonbackskinwerefeddaily‐E(doselevelswere500mg/kg and1000mg/kg)﹒ Theresultssuggestedthatthep ......