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A) Schematic diagram of structure of enzyme‐functionalized physical hydrogels based on poly(vinyl alcohol) and differential interference contrast image of hydrogels and B) chemical structures of glucuronide‐modified prodrug and native drug, and viabilities of hepatocyte cells cultured in presence of prodrugs and β‐Glu‐loaded hydrogels. Reproduced with permission.146 Copyright 2014, Wiley‐VCH.
