A genus of nonmotile, facultatively anaerobic bacteria containing gram-positive slender irregular rods, sometimes showing clubbed ends that may be in “V” formation with no filaments. These microorganisms are obligate parasites of the pharynx in farm animals and humans. AArcanobacterium haemolyticum occasionally causes lesions of the pharynx or skin.
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Examples: glitazone, GI cocktail, etc.