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Runyon group II mycobacteria


Definition: mycobacteria that produce a yellow pigment even when grown in the dark; when grown in the light, the pigment is orange. These organisms behave as saprophytes in humans and are usually nonpathogenic to laboratory animals.

Synonym(s): scotochromogens

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.