Obtaining of Sol-Gel Ketorolac-Silica Nanoparticles: Characterization and Drug Release Kinetics

Figure 4

TEM images of ketorolac-SiO₂ 1 : 8 in the first four images and of reference-SiO₂ 1 : 8 in the next four images.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)