Cover photograph (Copyright © 2007, American Society for Microbiology. All Rights Reserved.): Epifluorescent light micrograph of gfp-tagged Vibrio cholerae (green fluorescence) attached to the theca of the marine dinoflagellate Lingulodinium polyedrum (red fluorescence). Motility and chemotaxis appear to play a key role in this interaction. (See related article on page 5348.)
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