形态特征： 单细胞，无细胞壁 ( no cell wall) ，体形变化大，通常为梨形、椭圆形等。 具两条等长顶生鞭毛 (two equal flagella) ，比藻体约长1/3。
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With no cell wall, mycoplasma is not sensitive to some medicines, or can occasionally result in drug resistance.
因为支原体没有细胞壁，所以它对一些药物不敏感或是产生耐药。
And no diphtherotoxin was detected in its soluble metabolites indicating that cell wall defect might affect the production of diphtherotoxin, therefore lost its pathogenic role in exotoxin production.
提示细胞壁缺陷变异可影响白喉棒状杆菌产生白喉毒素蛋白质，从而使其丧失了产生外毒素致病的作用。
B deficiency made the cell wall extraction ratio higher, but made no significant influence to the cell wall component in root and leaf.
缺b使细胞壁提取率升高，但对根系和叶片细胞壁组成的影响不显著。
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