Cell wall (valve) architecture of diatom (Cyclotella) imaged at
0.5 kV without coating the material. Hitachi S4500 FESEM, Upper
detector. WD- Working Distance.
Cell wall (valve) architecture of diatom (Cyclotella) imaged at
1.0 kV without coating the material. Hitachi S4500 FESEM, Upper
detector. WD- Working Distance.