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''Mycobacterium agri'' is a species of the phylum actinobacteria (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus mycobacterium. ==Description== Microscopy *Gram-positive, nonmotile and acid-fast rods (3-7 µm long). Frequently join to grow in long threads. Colony characteristics *Rough, and nonphotochromogenic colonies. Physiology *Rapid growth on egg media at 22-45°C, not at 52°C, in less than 5 days. *Niacin negative, catalase positive, β-galactosidase usually positive. *Tween 80 not hydrolysed after 14 days. *Resistant to 5% NaCl, p-nitrobenzoic acid (0.5 mg/ml) and thiophene-2-carboxylic acid hydrazide (1 mg/l). 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「Mycobacterium agri」の詳細全文を読む スポンサード リンク
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