|Description:||Magnified 1125X, this mehenamine silver-stained photomicrograph revealed some of the ultrastructural details associated with a specimen of thawed pus extracted from the jaw bone of a wild Dall sheep, Ovis dalli with a suspected case of actinomycosis. See PHIL 10804 for a gross pathologic view of the mandible from which this specimen was derived.|
Actinomycosis is a chronic, i.e., long-standing disease, characterized by an infection, which usually traverses tissue planes, and is accompanied by the formation of sinuses that can cyclically heal, and again become reinfected. Curative methods include a long six to twelve-month antimicrobial regimen. Infection often begins with a disruption of a mucosal membrane’s patency, followed by a subsequent invasion of a commensal Actinomyces sp. bacteria, and usually takes place in the case of an immunocompromised individual. Though this case involved a sheep, human beings can contract this infection as well.