Using the patients' existing cells reduced the possibility of their immune systems attacking the manipulated cells.

利用病人现存的细胞来减少免疫系统对经过处理的细胞的攻击。

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In reality, gaps in health outcomes will be reduced, and health systems will strive for fairness only when equity is an explicit policy objective, also in sectors well beyond health.

实际上，只有在将公平作为卫生以及其它部门一项明确的政策目标的情况下，健康差距才会缩小，卫生系统才会努力追求公平。

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Are there important natural systems which simply cannot be reduced and modeled accurately?

有没有完全不能精简并精确模拟的重要的自然系统？

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The DSMB concluded that it was clear that use of antiretrovirals by HIV-infected individuals with relatively healthier immune systems substantially reduced transmission to their partners.

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Benbrook also fails to mention that by improving weed control and reducing the need for ploughing, genetically engineered herbicide-tolerant crops enable many farmers in North and South America to adopt and maintain no- or reduced-tillage production systems, which results in important reductions in greenhouse gas emissions.

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No doubt there will be some benefits: fraud, in particular the persistent and increasingly annoying problem of identity theft, might be substantially reduced if biometric-identification systems, introduced in the form of passports, visas and identity cards, become widespread.

ECONOMIST: BIOMETRICS