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germ
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Soft-walled bacteria door
软壁菌门
(phylum tenericutes)又称柔壁菌门,菌体无细胞壁,只有一种称为单位膜的原生质膜包围在菌体四周,厚约8—11nm,没有肽聚糖成分,菌体以球形或椭圆形为主,但形状多变而不固定,哑铃状或分枝状的均有。出芽繁殖、断裂繁殖或二分裂方式繁殖。没有鞭毛,大多数不能运动,少数可滑行或旋转运动,营养要求苛刻,对四环素类敏感。在固体培养基上形成扩散形的煎蛋状菌落。