人的正常细胞增殖能力是有限的，经过一定时期的增殖后，最终将进入一种生长抑制状态。
Normal human cells have a finite capacity to replicate and eventually enter a state of irreversible growth arrest. Immortalization may have a major impact in the future of medicine.
人的正常细胞增殖能力是有限的，经过一定时期的增殖后，最终将进入一种生长抑制状态。
Normal human cells have a finite capacity to replicate and eventually enter a state of irreversible growth arrest. Immortalization may have a major impact in the future of medicine.
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