Figure 4

Scanning electron microscope (SEM) images of the CHCl3-treated samples listed in Table 7, entries 1 (a), 2 (b) and 3 (c), and Table 8, entries 1 (d), 2 (e), 3 (f) and 4 (g).
Scanning electron microscope (SEM) images of the CHCl3-treated samples listed in Table 7, entries 1 (a), 2 (b) and 3 (c), and Table 8, entries 1 (d), 2 (e), 3 (f) and 4 (g).