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Description:This 1972 photograph depicts two Bacteroides fragilis subsp. fragilis bacterial colonies grown on blood agar medium for 48 hours.
Gram-negative B. fragilis, though a commensal bacteria that normally lives in the human gastrointestinal tract, can become pathogenic under circumstances involving disruption of the normal intestinal mucosa such as trauma, or surgery.
High Resolution: Click here for hi-resolution image (6.48 MB)
Content Providers(s):CDC/ Dr. V.R. Dowell, Jr.
Creation Date:1972
Photo Credit:
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.