以下为句子列表：
英文: Because the transplanted cells come from someone else, recipients must take immune-suppressing drugs for life to prevent rejection.
中文: 因为细胞来自于别人体内，接受移植的患者必须终生服用免疫抑制药物，预防产生排异现象。
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英文: Both techniques rely on wrapping the cells in a substance derived from seaweed , called alginate, which allows insulin out but stops the transplanted cells from being destroyed by the recipient's immune system.
中文: 这两项技术依靠用从海藻中提取的藻酸盐物质来包裹细胞，这样可以让胰岛素输送出来，但是同时防止被移植的细胞被受体的免疫系统破坏。
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