Bacitracin

Bacitracin is a mixture of related cyclic polypeptides produced by organisms of the licheniformis group of Bacillus subtilis var Tracy, first isolated in 1945. These peptides disrupt both gram positive and gram negative bacteria by interfering with cell wall and peptidoglycan synthesis. Bacitracin is used as a topical preparation (since it is toxic and has poor oral bioavailability). In terms of adverse reactions only, in comparison with bacitracin, white petrolatum possesses an equally low infection rate and minimal risk for induction of allergy. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video