This is the first evidence of direct mutation of AKT1 in human cancer tumors: it was discovered in clinical samples from cancer patients, yet has never been detected in cancer cell lines.
这是首次在人类肿瘤细胞中发现AKT1突变的直接证据，结果都是从临床样本中检测到的，而在肿瘤细胞株中尚未报道过此突变。
An international team of 16 scientists today reports the first direct measurement of the general rate of genetic mutation at individual DNA letters in humans.
近日，一个由16位科学家组成的国际性团队报道了首例人的个体DNA序列总基因突变速率的直接测量数据。
They are never a substitute for direct reference, referent movement, and content mutation.
他们从来都不能替代直接指涉，指涉运动和内容转变。
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