They would then be immunized as a way to prevent the cancer from coming back and spreading.

然后，对他们进行免疫接种，来防止癌症复发扩散。

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Also, a therapy directed at the pre-malignant basal cells about to become malignant could provide a way to prevent the cancer before it becomes dangerous.

而且，针对将变为恶性的癌前基底细胞的治疗能提供一种预防癌症的方法。

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"Women switching to exemestane had fewer cases of cancer in the other breast, which also suggests that taking the drug after tamoxifen may be a better way to prevent breast cancer than taking tamoxifen alone, " said Professor Charles Coombes of Imperial College London, the study's lead author.

BBC: Drug 'boosts breast cancer fight'