Prepared using the Brown and Brenn method of staining, and under a magnification of 125X, this photomicrograph reveals histopathologic changes indicative of the presence of the Gram-positive, rod-shaped bacteria, Arachnia propionica.Created: 1972
After 72 hours of growth, and under a relatively low magnification of 7.5X, this blood agar plate (BAP) produced colonies of Propionibacterium acnes bacteria.Created: 1972