Nanostructural Organization of Naturally Occurring Composites—Part I: Silica-Collagen-Based Biocomposites

Figure 4

(a) High-resolution transmission electron microscopy image of the fragment of M. chuni collagen microfibril; (b) the arrows indicate the presence of nanofibrillar structures with a diameter which corresponds to that of collagen triple helices (1.5 nm). The results of aminoacid analysis (right) of these microfibrills showed an aminoacid content typical for collagens isolated from different sources [21].