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. 2021 Mar 26;10:43–51. doi: 10.1007/s40204-021-00150-x

Fig. 4.

Fig. 4

Physical and biological properties of GMP/GMPH hydrogels. a Equilibrium swelling ratio (ESR) of GMP and GMPH hydrogels (n = 6, unpaired two-tailed t test, P = 0.0195, *P < 0.05); b Equilibrium water content (EWC) of GMP and GMPH hydrogels (n = 6, unpaired two-tailed t test, P = 0.0190, *P < 0.05); c Gelation ratio of GMP and GMPH hydrogels (n = 6, unpaired two-tailed t test, P = 0.0114, *P < 0.05); d Biodegradation assay showed an accelerated degradation rate (%) of GMP hydrogel in week 2 (n = 6, unpaired two-tailed t test, P = 0.0015, *P < 0.05). GMPH hydrogel showed a slower degradation rate than GMP hydrogel in week 2 (n = 6, unpaired two-tailed t test, P = 0.0004, *P < 0.05); e MTT assay showing the viability of MG63 cells treated with the extracts of hydrogels. All error bars represent mean  ±  s.e.m. GM (GelMA), GMP (GelMA/PEGDA), GMPH (GelMA/PEGDA-nanohydroxyapatite)