The bacterial filaments are gram-positive, 0.2-0.5 μm thick, branched, and slender, and extend into the peripheral rays. Staining with Gram stain may be weak and irregular, producing a beaded or even a gram-negative appearance. DIFFERENTIAL DIAGNOSIS The pathologic differential diagnosis includes ...
Actinomyces is an aerobic or microaerobic, Gram-positive, non-acid fast, filamentous, diphtheroidal rod or coccobacillus-shaped bacteria. Actinomycosisis is seen mostly as a dental disease of cattle, however it also occurs in other animal species such as dogs, cats, cows, goats and horses. ...
They tend, especially in old cultures, to be Gram-variable (some Gram-negative cells) rather than clearly Gram-positive. Nocardias are very tenacious, and many survive, but do not grow, under noxious conditions of acidity, high salt, dryness, and other environmental extremes. If their entire...
by a gram-negative braod-host-range plasmid.Examines the transformation of Actinomyces by a gram-negative broad-host-range plasmid. Transfer of the vector pJRD215 into strains of Actinomyces; Resistance to kanamycin and streptomycin; Deletion and rearrangement of the plasmid DNA....
Recent Taxonomic Changes for Anaerobic Gram-Positive and selected Gram-Negative Organisms The strains formerly classified as Streptococcus anginosus or " Streptococcus milleri " have now been recognized as three distinct species, Streptococcus anginosus, Streptococcus constellatus , and Streptococcus intermedi...
Thesaurus Medical Encyclopedia Related to Actinomyces israelii:Nocardia asteroides ac·tin·o·my·ces (ăk-tĭn′ō-mī′sēz, ăk′tə-nō-) n.pl.actinomyces Any of various rod-shaped or filamentous, chiefly anaerobic bacteria of the genusActinomyces,commonly found in the mammalian oral ...
Three facultatively anaerobic, Gram-positive staining, rod-shaped, non-spore forming, flagellated bacterial strains, BL-75, BL-79 T and BL-104, were isolated from chlorinated solvent-contaminated groundwater. Phylogenetic analysis based on 16S rRNA gene sequence comparisons showed them to represent a...
An unknown Gram-positive , catalase-negative, ovoid-shaped bacterium isolated from the submandibular abscess of a rabbit was subjected to a polyphasic taxo... L Hoyles,G Foster,E Falsen,... - 《International Journal of Systematic & Evolutionary Microbiology》 被引量: 238发表: 2000年 Actinomyce...
14.2Antimicrobial Activity of Graphenes Functionalized With Silver Nanoparticles and/or Clove Extract The study of the antimicrobial activity was performed on 22 gram-positive and gram-negative bacterial strains isolated from patients with periodontitis: T 66Pasteurella haemolytica, T 41.2Actinomyces naes...
It can also be associated with an impacted tooth, periodontitis, or periimplantitis. The majority of cases are asymptomatic. Anaerobic gram-positive bacteria such as Actinomyces israelii, Actinomyces odontolyticus, Actinomyces naeslundii, Actinomyces gerencseriae, and Actinomyces viscosus have been ...