Diatoms have cell walls called frustules that contain opaline silica and fine pores. The tiny pores in the frustules make them a useful filtering material for a wide range of industrial products, including beer and jet fuel.
Bio Art in a Petri Dish :These little examples of bacteria are created by Eshel Ben-Jacob of the Tel Aviv University. He is currently professor of physics in the School of Physics and Astronomy. And this is what he does with his free time.
☤ MD ☞ ☆☆☆ Colored scanning electron micrograph (SEM) of squamous cell carcinoma (cancer) cells from a human mouth. The many blebs (lumps) and microvilli (small projections) on the cells' surfaces are typical of cancer cells.