Figure 7
From: Exploratory Testing of Diatom Silica to Map the Role of Material Attributes on Cell Fate

Scanning electron micrographs (a) C. meneghiniana (b) Triceratium dubium (c) Melosira varians (d to f) Diatomaceous earth (Note: this material is a crude mixtures of different species of fossilised diatoms, images represent image particles found in the mixture).