Public Domain Picture: This photograph depicts the colonial morphology displayed by Gram-positive Bacillus cereus bacteria, which was grown on a medium of sheep's

By: CDC/ Amanda Moore, MT; Todd Parker, PhD; Audra Marsh, Courtesy: Public Health Image Library

Views: 844 | Downloads: 1

This photograph depicts the colonial morphology displayed by Gram-positive Bacillus cereus bacteria, which was grown on a medium of sheep's

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Title:

This photograph depicts the colonial morphology displayed by Gram-positive Bacillus cereus bacteria, which was grown on a medium of sheep's

Description:

This photograph depicts the colonial morphology displayed by Gram-positive Bacillus cereus bacteria, which was grown on a medium of sheep's blood agar (SBA), for a 24 hour time period, at a temperature of 37�C. Worthy of note, is the hemolytic reaction caused by these bacteria, as evidenced by the faded, hazy coloration surrounding these colonies. It is within this region of faded red color, that the red blood cells in the SBA medium had been lysed, or destroyed by chemical by-products produced by these organisms, thereby, liberating their intracellular hemoglobin. See PHIL 12378, for a closer view of these bacterial colonies, and this hemolytic reaction.

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CDC/ Amanda Moore, MT; Todd Parker, PhD; Audra Marsh

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Public Health Image Library

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December 4, 2012

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