The actual target was breast cancer stem cells, the cells from which cancers grow and metastasize, and which tend to resist drug and radiation treatments.

事实上，加热的目标是那些会导致癌症生长和转移、以及对药物和化疗有抵抗力的乳腺癌干细胞。

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But sometimes the cancers spread to other parts of the body or partially resist radiation and grow back later.

但有时肿瘤会扩散到身体其他部位，以及局部对放疗不敏感而复发。

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