Description: | Caption: Under a magnification of 2000X, this photomicrograph highlights histopathologic details exhibited by a tissue sample stained using the Brown & Brenn technique. The specimen had been extracted from a gallbladder empyema, in a case of actinomycosis. Analysis of this sample revealed the presence of numerous, rod-shaped, darkly staining, filamentous Actinomyces sp. bacteria. |