Can a Biodegradable Implanted Bilayered Drug Delivery System Loaded with BMP-2/BMP-12 Take an Effective Role in the Biological Repair Process of Bone–Tendon Injuries? A Preliminary Report

Figure 4

(a) Swelling balance of hydrogel. (b) Expression of absorbance type into amount of released growth factors to loaded design against time. (c) Evaluation of the surface morphology of the hydrogel by ESEM. The images were recorded at a pressure of 219–231 Pa in ESEM vacuum mode, at 1000x–10.000x magnification and 82,9 μm resolution depths (HFW), at an operating voltage of 5.00 kV, and at a working distance of 9,4–10,7 mm.

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