Fig. 1From: Streptobacillus moniliformis bacteremia in a rheumatoid arthritis patient without a rat bite: a case reportMicroscopic images with Gram-staining (a). Highly pleomorphic, filamentous gram-negative bacilli can be seen in 2-day aerobic culture with 5 % CO2 on 5 % sheep blood agar. Colonies are very tiny, transparent and slightly white (b). High-power views of the colonies (c)Back to article page