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Arcanobacterium haemolyticum, formerly known as Corynebacterium hæmolyticum, is a bacterium classified as a Gram-positive bacillus and is catalase-negative, aerobic, beta-haemolytic, nonmotile.〔http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2644988/〕 It is part of the normal flora of the pharynx, but may cause head and neck infections, pharyngitis and sinusitis.〔http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2644988/〕 ==History== It was first described by MacClean et al. in 1946 from US servicemen and peoples of the South Pacific suffering from sore throat.〔MacLean PD, Liebow AA, Rosenberg AA. A hemolytic Corynebacterium resembling Corynebacterium ovis and Corynebacterium pyogenes in man. J Infect Dis. 1946;79:69-90.〕 Due to is resemblance to another type of bacteria, Corynebacterium, ''A. haemolyticum'' was initially classified as ''C. pyogenes'' subspecies ''hominus''. Controversies regarding classification were resolved in 1982 when a new genus, ''Arcanobacterium'' (enigmatic bacterium) was created based on its peptidoglycan, fatty acid, and DNA characteristics. Since its initial description, the spectrum of diseases caused by ''A. haemolyticum'' has been expanded to include sepsis and osteomyelitis. Organisms are Gram-positive, facultative anaerobic, catalase negative rods (but transition to the coccal shape occurs as the organism grows) with arrangements described as matchbox or Chinese letters arrangements. Growth is enhanced in blood and by carbon dioxide. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arcanobacterium haemolyticum」の詳細全文を読む スポンサード リンク
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