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The reverse CAMP test is a method to identify Clostridium perfringens using β-hemolytic streptococci. The CAMP factor produced by S. agalactiae and the alpha toxin produced by C. perfringens act synergistically to produce enhanced hemolysis. Streaking these two organisms perpendicular to each other on a blood agar plate will yield a “bow tie ...
Corynebacterium haemolyticum MacLean et al. 1946. 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 ...
Arcanobacterium (/ ɑːr ˈ k eɪ n oʊ b æ k ˌ t ɪər i ə m /) is a genus of bacteria. They are gram-positive, [1] non–acid fast, [1] nonmotile, [1] facultatively anaerobic, [1] and non–endospore forming. [1] They are widely distributed in nature in the microbiota of animals (including the human microbiota) and are mostly innocuous.
Diagnostic microbiology is the study of microbial identification. Since the discovery of the germ theory of disease, scientists have been finding ways to harvest specific organisms. Using methods such as differential media or genome sequencing, physicians and scientists can observe novel functions in organisms for more effective and accurate ...
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.
Hemolysis (from Greek αιμόλυση, meaning 'blood breakdown') is the breakdown of red blood cells. The ability of bacterial colonies to induce hemolysis when grown on blood agar is used to classify certain microorganisms. This is particularly useful in classifying streptococcal species. A substance that causes hemolysis is called a hemolysin.
Gram staining is a bacteriological laboratory technique [7] used to differentiate bacterial species into two large groups (gram-positive and gram-negative) based on the physical properties of their cell walls. [8][page needed] Gram staining can also be used to diagnose a fungal infection. [1]
Trueperella pyogenes. Trueperella pyogenes is a species of nonmotile, facultatively anaerobic, Gram-positive bacteria. The cells typically measure 0.5 by 2.0 μm. They appear as pleomorphic or coccoid rods. They tend to be grouped singly or in short chains but are sometimes grouped into V-shaped pairs. [4]