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SEM images (magnification 500×) of CS/CPL composite cryogels: (A) only CS, (B) CS/CPL20, (C) CS/CPL33, (D) CS/CPL50, (E) CS/CPL67, and (F) CS/CPL80. (G) In vitro cumulative drug release of DS from cross-linked CS, CS/CPL20 and CS/CPL33 composite cryogels comparative with cumulative release data of IDM from CS/CPL20 composite cryogels. A total of 100 mg drug/g of cryogel was loaded. Adopted with permission from [39].
