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Microsporum audouinii
''Microsporum audouinii'' is an anthropophilic fungus in the genus ''Microsporum''.〔
It is a type of dermatophyte that colonizes keratinized tissues (primarily hair) causing infection.〔 The fungus is characterized by its spindle shaped macroconidia (7-30 × 35-160 µm), clavate microconidia (2.5-3.5 × 4-7 µm) as well as its pitted or spiny external walls.〔
==Growth conditions==
This fungus is often found in soil that is rich in keratinous material.〔 However, there are other factors that can influence its growth, such as pH, relative humidity, organic carbon, nitrogen and temperature.〔 ''Microsporum audouinii'' appears to prefer a neutral pH in the range of 6.8-7.0 and room temperature for growth.〔 Drastic increases or decreases in temperature can inhibit its growth.〔 ''Microsporum audouinii'' is effective in utilizing its carbon sources, but growth is strongest in the hexoses (glucose, mannose and fructose) and weakest in maltose, sucrose, lactose and galactose.〔 It is unable to synthesize the vitamins thiamine, niacin and riboflavin and requires an exogenous supply of these materials to support its growth.〔 The fungus is only able to utilize organic nitrogen sources, particularly nitrogen from arginine and urea.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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