Figure 3
From: The genome of the square archaeon Haloquadratum walsbyi : life at the limits of water activity
Electron Tomographic image of a single square cell of H, walsbyi. In agreement with previous observations, gas vesicles (GV) recognized by their spindle shape are found at the borders of the cell. The large number of circular electron-dense bodies are most likely poly-3-hydroxy-butyric acid (PHB) polymers consistent with Nile-Blue staining patterns [4]. The genes encoding PHB biosynthesis proteins have been identified (image by H. Engelhardt).