Now they have to build on those efforts to control the more dangerous threat of drug-resistant TB – strains that cannot be cured by the most commonly used drugs.

现在，它们必须在这些工作的基础上控制耐药结核菌株构成的更危险的威胁，因为最常用的药物不能治疗这种菌株。

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Conclusion Among the three rat strains most commonly used for hepatic oval cell proliferation models, hepatic oval cells from F344 rats have the highest activation efficiency.

结论在用于建立肝脏卵圆细胞增殖模型最为常见的三种品系大鼠中，F344大鼠所建模型的肝脏卵圆细胞活化效率最高。

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Dr Garner and his team let each of their mice, 36 males and as many females from three strains commonly used in trials, roam free in two cages connected by a narrow tube.

ECONOMIST: ��and they may return the favour

Both of the strains are typed according to their resistance to antibiotics commonly used to treat them.

BBC: Breakthrough in 'superbug' battle

However, new strains of the bacterium have developed which are increasingly resistant to the antibiotics most commonly used to treat it.

BBC: Indian TB cases 'can't be cured'