These tiny robots move from cell to cell in the patient's body, destroying the cancer cells.

这些微型机器人在病人体内的细胞之间移动，摧毁癌细胞。

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X-rays and other forms of radiation were known to kill cells and these were aimed at lymph glands near and distant, on sites of secondary cancer spread in bone and lung and brain.

X射线和其他的射线可以杀死细胞，这些射线以近端和远端的淋巴结为目标，瞄准在骨头里、肺里和脑里扩散的继发肿瘤（转移瘤）。

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These cancer cells do not show up in the standard tests until they have multiplied to a few billion.

直到这些癌细胞增加亿万倍，它们在标准性检测中并不显示出来。

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He said it might be the case that the virus was found in these particular cancer cells simply because they provided favourable conditions for it.

BBC: vaccine

In these people, the proportion of cancer stem cells decreased from 10% before therapy to 7.5% after they were treated.

ECONOMIST: Cancer therapy

These mutant stem cells already have been found in breast cancer, two types of leukemia and multiple myeloma.

FORBES: Cancer Killer