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In vitro release profiles of BMP2-derived peptide P24 (P24) from chitosan–4-thio-butylamidine/β-glycerophosphate disodium/hydroxyapatite (CS-TBA/β-GP/HA) as well as from chitosan/β-glycerophosphate disodium/hydroxyapatite (CS/β-GP/HA) hydrogels. Indicated values are means (n = 4) ± SD. Reprinted with permission from ref (148). Copyright 2016 Elsevier.
