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''Madurella grisea'' is a fungal species of the genus ''Madurella''. Along with ''Exophiala jeanselmei'', ''Madurella grisea'' is one of the most common pathogenic agents associated with eumycetoma. ==Laboratory characteristics== Colonies of ''Madurella grisea'' are slow growing, dark, leathery, and folded with radial grooves and with a light brown to greyish surface mycelium. With age, colonies become dark- to reddish-brown and acquire a brownish-black reverse. Microscopically, cultures are sterile, although hyphae of two widths have been described: thin at 1 to 3 um in width, and broad at 3 to 5 um in width. The optimum temperature of growth for ''M. grisea'' is 30C, it does not grow at 37C. RG-2 organism. Grains of ''Madurella grisea'' (tissue microcolonies) are black, round to lobed, soft to firm, up to 1.0 mm, with two distinctive zones, a hyaline to weakly pigmented central zone and a deeply pigmented periphery. ''M. grisea'' can be distinguished from Madurella mycetomatis by the inability to grow at 37C or assimilate lactose. MIC data for ''Madurella grisea'' is limited. Antifungal susceptibility testing of individual strains is recommended. Antifungal 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Madurella grisea」の詳細全文を読む スポンサード リンク
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