: a polypeptide antibiotic or mixture of antibiotics that is similar to bacitracin and is produced by a soil bacterium of the genus Bacillus (B. subtilis)

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“Subtilin.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/subtilin. Accessed 10 Mar. 2025.

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