Runyon group I mycobacteria

(redirected from photochromogens)

Runyon group I my·co·bac·te·ri·a

mycobacteria that produce a bright yellow color when grown in the presence of light. Organisms placed in this group include Mycobacterium kansasii.
Synonym(s): photochromogens

Run·yon group I my·co·bac·te·ri·a

(rŭn'yŏn grūp mī'kō-bak-tēr'ē-ă)
Mycobacteria that produce a bright yellow color when grown in the presence of light. Organisms placed in this group include Mycobacterium kansasii.
References in periodicals archive ?
Nontuberculous mycobacteria are also called as atypical mycobacteria and are classified into: 1) Photochromogens 2) Scotochromogen 3) Nonchromogens 4) Rapid growers.
Photochromogens (Group I): Produce non-pigmented colonies in dark and pigmented colonies when exposed to light and re-incubation e.