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Radiation therapy has been a cornerstone of cancer treatment since shortly after Wilhelm Conrad Röntgen discovered X-rays in 1895. Today, more than half of all cancer patients receive it as part of their care, typically in relatively low doses of X-rays delivered over dozens of sessions. Although this approach often kills the tumor, it also wreaks havoc on nearby healthy tissue. Even with modern precision targeting, the potential for collateral damage limits how much radiation doctors can safely deliver.
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日前，特斯拉官方上线了一款超迷你储能站造型充电宝——Megapack 充电器。
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«Америка пожалеет». Что известно о новом верховном лидере Ирана и как к нему относятся в США?04:55。关于这个话题，新收录的资料提供了深入分析
Rembrandt van Rijn, Vision of Zacharias in the Temple, 1633. On loan from a private collection. Photo: Rene Gerritsen