| photochromogens | Synonym: group I mycobacteria. Origin: photo-+ G. Chroma, colour, + -gen, producing (05 Mar 2000) |
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| photochromogen |
a microorganism whose pigmentation develops as a result of exposure to light, e.g., Mycobacterium kansasii (pathogenic for humans), which is yellow-orange if grown in the light, and almost colorless if grown in the dark. See also nontuberculous mycobacteria, under mycobacterium.
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| photochromogenic |
pertaining to or characterized by photochromogenicity.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| photochromogenicity |
the property of microorganisms of forming pigment consequent to light exposure; induction occurs within a few minutes in the shorter wavelengths of visible light, pigmentation then occurring within 24 hours if conditions permit continued growth.
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