photochromogen

photochromogen

 [fo″to-kro´mo-jen] a microorganism whose pigmentation develops as a result of exposure to light. adj., adj photochromogen´ic.

photochromogen

(fō-tō-krō′mō-jĕn) [″ + chroma, color, + gennan, to produce] Certain microorganisms in which a pigment develops when it is grown in the presence of light, such as Mycobacterium kansasii.