Cover photograph (Copyright © 2005, American Society for Microbiology. All Rights Reserved.): Composite fluorescence micrograph of sporulating Bacillus subtilis cells, showing nucleoids (stained with 4`,6-diamidino phenylindole), membranes (stained with FM4-64), and the localization of a YwcE-green fluorescent protein fusion protein (in green) 6 h after the onset of sporulation. (See related article on page 6443.)