Figure 1
From: Cellulose intrafibrillar mineralization of biological silica in a rice plant
Characterization of the surface layer of a mature rice husk. A photo of a rice husk (a), SEM images of the surface (b), and the cross section (c, e, h–l) with elemental mapping (d, f, g) of a raw mature rice husk (Si: green; C: red; O: blue). White arrows indicate thin fibrils (j).
