Poly-γ-Glutamic Acid Nanoparticles Based Visible Light-Curable Hydrogel for Biomedical Application

Figure 5

SEM images of superficial (a) and broken surfaces (b) of the PGA nanogel. Notes: image (a) was obtained at lower magnification: 25 k (×25000); image (b) was obtained at higher magnification: 30 k (×30000).

(a)

(b)