Under a moderately-high magnification of 8000X, this scanning electron micrograph (SEM) depicted a large grouping of Gram-negative Legionella pneumophila
bacteria. Please see PHIL 11092 through 11152 for additional SEMs of these organisms, specifically PHIL 11152 for a colorized version of this image. Of particular importance, is the presence of polar flagella, and pili, or long streamers, which due to their fragile nature, in some of these views seem to be dissociated from any of the bacteria. For a better view of these bacterial appendages, see the colorized version.