NCIt definition : A species of anaerobic, Gram positive, rod shaped bacteria assigned to the phylum
Actinobacteria. This bacteria hydrolyzes esculin, produces acid from xylose and is
urease and catalase negative. A. israelii is found in the flora of the human oral
and nasopharyngeal tract and in animals and is the most frequent cause of actinomycosis
in humans.;
Alternative definition : CDISC: Any bacterial organism that can be assigned to the species Actinomyces israelii.;