Bacteroides sp. bacterium, SEM

Bacteroides sp. bacterium, SEM

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Caption: Coloured scanning electron micrograph (SEM) of Bacteroides sp., rod shaped, obligately anaerobic, gram-negative, saccharolytic bacterium. Bacteroides is the most common bacteria found in the human intestinal tract. They are involved in many important metabolic activities in the human flora of the colon, including fermentation of carbohydrates, utilization of nitrogenous substances, and biotransformation of bile acids and other steroids. When Bacteroides escape the colon, they are responsible for many types of infections and abscesses that can occur all over the body including the upper body, chest, abdomen, pelvis, the skin, the soft tissues and central nervous system. Bacteroides are known to be involved in cases of meningitis and shunt infections, especially in children. Bacteriodes often become resistant to antibiotics. Magnification: x2,400 when shortest axis printed at 25 millimetres.

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