Cover photograph (Copyright © 2007, American Society for Microbiology. All Rights Reserved.): Arsenite-treated human osteosarcoma cells (U2OS) stained for stress granules (eukaryotic translation initiation factor 3; green), processing bodies (DCP1a; red), and DNA (Hoechst dye; blue). Mitotic cells are unable to assemble stress granules or processing bodies, indicative of stalled ribosomal translocation and consequent polysome stabilization. (See related article on September 2006, vol. 27: issue 19, p. 6639.)