450483.fig.004a
(a)
450483.fig.004b
(b)
450483.fig.004c
(c)
450483.fig.004d
(d)
450483.fig.004e
(e)
450483.fig.004f
(f)
450483.fig.004g
(g)
450483.fig.004h
(h)
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.