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A) The structures of hydrogelators 5–10 consisting of D-Amino acids and Npx; B) IC50 values of Npx-based hydrogelators for inhibiting COX enzyme (selectivity, defined as the ratio of the IC50 values towards COX-1 and COX-2, is labeled on top of bars); C) Release profiles of Npx-based hydrogelators from hydrogels 5–10. (Adapted from ref 11, Copyright 2013 American Chemical Society)
