ID#: 6623
Caption:
This photomicrograph of an inoculated chick yolk sac suspension specimen, revealed the presence of Legionella pneumophila bacteria. The specimen was prepared using a carbol–basic fuchsin Gimenez stain solution, and counterstained using malachite green. This method accentuates the bacteria by imparting a red color to the organisms, seen against a bluish-green background. L. pneumophila is a slow growing organism that requires specific nutrients such as charcoal in order to sustain its growth. It’s an aquatic organism that thrives in warm environments, 32°- 45°C, causing over 90% of Legionnaires' disease (LD) in the United States. Note the singular, paired, and filamentous groupings of these bacilli.
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Content Provider(s): CDC
Creation Date: 1994
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.