958465.fig.004a
(a)
958465.fig.004b
(b)
Figure 4: (a) SEM images of unloaded nasal insert: F1 (A), F2 (B), F3 (C), F4 (D), and F5 (E). (b) SEM images of loaded nasal inserts: F6 (A), F8 (B), F10 (C), F12 (D), and F14 (E).