Figure 7

Scanning electron micrographs for sample 3. (a,b) Representative structures for blue contour in Fig. 6. (c) purple contour in Fig. 6. (d) red contour in Fig. 6. (e,f) yellow contour in Fig. 6. (g,h) higher magnification view of typical aggregates with polycrystalline appearance. (g) and (h) correspond to red star and red dashed rectangle in (f), respectively. Red arrows point towards red blood cells. Generated by ZeissSmartSEM software (version 6.06).