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Description:This illustration depicts a photomicrographic composited view of a tissue specimen taken from a “lumpy jaw” lesion of a cow and reveals the presence of numerous, Actinomyces bovis bacterial organisms, which is the pathogen responsible for causing lumpy jaw in cattle.
This bacterium is also known as “ray fungus”, due to the radiating spread of the anaerobic, Gram-positive, fungal-like filamentous organisms. Note the sulfur granule, which is a characteristic often found under microscopic examination of the chronic granulomatous lesions caused by infiltration of this common oral bacterium into the soft tissues of the head and neck. Though A. bovis is a veterinary problem, affecting cattle sheep, pigs, and dogs, its cousin A. israelii does infect humans.
High Resolution: Click here for hi-resolution image (16.83 MB)
Content Providers(s):CDC
Creation Date:1979
Photo Credit:
Links:CDC- Emerging Infectious Diseases; ”Actinomyces odontolyticus Bacteremia”, by Lawrence A. Cone, et. al., Vol. 9, No. 12, December 2003
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.