古往今来,无论是谁,不管躲到哪里,都无法逃避衰老。正如一首诗所说:“世间公道唯白发,贵人头上不曾饶。”几乎每代人都对衰老的机制进行过力所能及的研究,据说目前不同的理论至少有300种。可惜仍然没有找到公认的清晰答案。其实,科学家们都在从不同的角度逐渐逼近真理。我们已经知道,人类胚胎成纤维细胞每次分裂,染色体端粒便缩短约100对碱基,因此细胞传代数 Throughout the ages, no matter who, regardless of hiding where, are unable to escape aging. As one poem says: “There is no fairness in the world, but noble people do not have their own heads.” Almost every generation has conducted research on the mechanisms of aging almost every generation. At present, there are at least 300 different theories. Unfortunately, still did not find a clear and clear answer. In fact, scientists are gradually approaching the truth from different angles. As we have seen, each time human embryonic fibroblasts divide, chromosome telomeres shorten about 100 pairs of bases, so the cell passage number