Bacillus sphaericus

A large aerobic gram-positive or gram-variable bacillus that produces endospores. It produces compact and heaped colonies or colonies that spread over the agar surface. Rarely, may produce a pink colony. It is ubiquitous in nature being found in soil, fresh and salt water sediments, milk, foods, and antacids. Usually considered nonpathogenic for humans, but may occasionally be an opportunistic pathogen.

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