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Rim of a colony of Bacillus mycoides on Mueller-Hinton agar. Cultivation 72 hours, 28°C. Soil isolate.
Ubiquitous in nature, Bacillus includes both free-living and pathogenic species. Under stressful environmental conditions, the cells produce oval endospores that can stay dormant for extended periods. These characteristics originally defined the genus, but not all such species are closely related, and many have been moved to other genera.
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