c493067f1abe9b5fdb86efc4d8b83a16

Licensehttp://creativecommons.org/licenses/publicdomain/
Rating2.5
VettedTrusted
Description
Under a high magnification of 10000X, this scanning electron micrograph (SEM) depicted a grouping of Gram-negative Legionella pneumophila bacteria. Please note that you’re able to see a number of the flagella emanating from these organisms. Please see PHIL 11092 through 11152 for additional SEMs of these organisms, specifically PHIL 11108 for a colorized version of this image.

You’ll note that a number of these bacteria seem to display an elongated-rod morphology. L. pneumophila are known to most frequently exhibit this configuration when grown in broth, however, they can also elongate when plate-grown cells age, as it was in this case, especially when they’ve been refrigerated. The usual L. pneumophila morphology consists of stout, fat bacilli, which is the case for the vast majority of the organisms depicted here.
Created: 2009

Original URLhttp://phil.cdc.gov/PHIL_Images/11107/11107_lores.jpg
photographerJanice Haney Carr
providerPublic Health Image Library
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith