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从恶性肿瘤到传染性疾病，基因科学正在使医学实践发生全面变化。给人配备治疗性基因可能还要几十年时间，但科学家正在寻求驾驭ＤＮＡ的更简易的方法──
From malignant tumors to infectious diseases, genetic science is making a complete change in medical practice. It can take decades to equip people with therapeutic genes, but scientists are looking for a simpler way to harness DNA -