Fig. 3From: An injectable photo-cross-linking silk hydrogel system augments diabetic wound healing in orthopaedic surgery through spatiotemporal immunomodulationDrug release assay of the hydrogel system in vitro. Cumulative release mass curves of Met and Ag NPs of hydrogel systems with different MET@MSNs and Ag NPs mass ratios (1: 1, 2:1, and 3:1) in 2 mL neural (pH = 7.4) (a–c), acidic (pH = 6.0) (d–f) and alkaline(pH = 8.0) (g–i) PBS at 37 ℃ using a shaker (200 rpm)Back to article page