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Actinomyces Meyeri Gram Stain. However cultures are negative in. Are gram-positive obligate anaerobes known to reside in the mouth and intestinal tract. These bacteria are generally anaerobes. On an anaerobic cul- ture Actinomyces meyeri forms creamy-white moist confluent colonies on chocolate agar.
Human actinomycosis can be caused by any one of 6 species with A. Therefore it should be distinguished from Nocardia and Streptomyces. However cultures are negative in. In animals they normally live in the small spaces between the teeth and gums causing infection only. Pathology due to proliferation of organisms usually occurs following injury or trauma to tissue resulting in actinomycosis abscess formation and swelling at the site of infection. Two new Actinomyces species of oral origin have been described recently.
On an anaerobic cul- ture Actinomyces meyeri forms creamy-white moist confluent colonies on chocolate agar.
Actinomyces georgiaeActinomyces gerensceriae and Actinomyces meyerihave been isolated from gingival crevices of periodontally healthy individuals 3 10. Gram stain of the fluid revealed Gram-positive filamentous rods and cultures of the fluid grew Actinomyces species Fig. We analyzed the fluid using a method for clone library sequencing of the 16S ribosomal DNA rDNA gene and Actinomyces meyeri along with other anaerobes Fusobacterium species were detected 10. Two new Actinomyces species of oral origin have been described recently. Meyeri in brain abscesses and Actinobaculum schaalii currently Actinotignum schaalii in urosepsis and the introduction of advanced microbiological techniques which can identify even very fastidious organisms have resulted in an increased awareness of Actinomyces and other Gram. Actinomyces stain in tissue with Gomori methenamine silver and the Brown and Brenn modification of the Gram stain 8.