Figure 4

Scanning electron micrographs of biomineralized plastic types with (a,c,e,g) and without (b,d,f,h) the addition of oil at magnifications of 150x and inset images at magnification of 1000x.

Scanning electron micrographs of biomineralized plastic types with (a,c,e,g) and without (b,d,f,h) the addition of oil at magnifications of 150x and inset images at magnification of 1000x.