This photograph depicts the colonial morphology displayed by Gram-negative Brucella suis bacteria, which was grown on a medium of MacConkey agar, for a 24 hour time period, at a temperature of 37�C. See PHIL 12482 and 12483, for closer views of these bacterial colonies. Brucella spp. bacteria are pathogenic towards humans, and cause a disease known as brucellosis.
CDC/ Amanda Moore, MT; Todd Parker, PhD; Audra Marsh
December 4, 2012
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