PMC7497826_01
C. ramosum
 colonies on Brucella blood agar.
acmi-2-137-g001.jpg
PMC7497826_01_acmi-2-137-g001.jpg
F1
Anaerobic growth on Brucella blood agar supplemented with hemin and vitamin K (BA) yielded a pure culture of small, greyish, smooth, round, non-haemolytic colonies with whole edges after 48 h that turned brown with longer incubation (Fig. 1).
C. ramosum
 Gram stain.
acmi-2-137-g002.jpg
PMC7497826_01_acmi-2-137-g002.jpg
F2
The organism stained gram-variable, although it demonstrated susceptibility to vancomycin (5 microg) and resistance to colistin (10 microg) special potency identification discs, suggesting that it was a gram-positive bacterium (Fig. 2).