752719.fig.004a
(a)
752719.fig.004b
(b)
752719.fig.004c
(c)
752719.fig.004d
(d)
Figure 4: FE-SEM photographs of (a) not treated SA and SA samples loaded with different amount of nimesulide: (b) 1.0 wt%, (c) 5.4 wt%, (d) 8.9 wt%.