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Arcanobacterium haemolyticum is a species of bacteria classified as a gram-positive bacillus. It is catalase-negative, facultative anaerobic, beta-hemolytic, and not motile. [1] It has been known to cause head and neck infections, pharyngitis, and sinusitis (Arcanobacterium haemolyticum infections). [1]
The term "atypical" does not relate to how commonly these organisms cause pneumonia, how well it responds to common antibiotics or how typical the symptoms are; it refers instead to the fact that these organisms have atypical or absent cell wall structures and do not take up Gram stain in the same manner as gram-negative and gram-positive ...
In gram-positive bacteria, the S-layer is attached to the peptidoglycan layer. Gram-negative bacteria's S-layer is attached directly to the outer membrane. Specific to gram-positive bacteria is the presence of teichoic acids in the cell wall. Some of these are lipoteichoic acids, which have a lipid component in the cell membrane that can assist ...
An Arcanobacterium haemolyticum infection is any of several types of infection with the gram-positive bacillus Arcanobacterium haemolyticum. It can cause an acute pharyngitis, and it may cause an exanthem characterized by an erythematous, morbilliform or scarlatiniform eruption involving the trunk and extremities. [1]: 268
Corynebacterium (/ k ɔː ˈ r aɪ n ə b æ k ˌ t ɪər i ə m,-ˈ r ɪ n-/) is a genus of Gram-positive bacteria and most are aerobic.They are bacilli (rod-shaped), and in some phases of life they are, more specifically, club-shaped, which inspired the genus name (coryneform means "club-shaped").
Clostridium septicum is a large, gram-positive, rod-shaped bacterium that is a member of the normal gut flora in humans as well as other animals. [4] C. septicum are spore formers, with a terminal spore that gives them their drumstick-like shape. [5] They are also motile bacteria, using peritrichous flagellae to navigate from one environment to ...
Clostridium perfringens (formerly known as C. welchii, or Bacillus welchii) is a Gram-positive, bacillus (rod-shaped), anaerobic, spore-forming pathogenic bacterium of the genus Clostridium. [ 1 ] [ 2 ] C. perfringens is ever-present in nature and can be found as a normal component of decaying vegetation, marine sediment , the intestinal tract ...
Members of this genus are anaerobic, non-sporulating, non-motile, Gram-positive bacilli that grow singly, as pairs, or in short chains. They are found in the human colon and feces and have been implicated as a cause of ulcerative colitis, liver and anal abscesses and systemic bacteremia. [2] [3]