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放化疗即化学出生治疗，是对病原微生物、寄生虫、恶性肿瘤所致得以疾病的药物晋升治疗。 化疗也指开始应用药物治疗癌症，这些特殊的药物可杀灭肿瘤细胞，有时称为细胞 物。放疗就是放射治疗，指用射线消除病灶，放射治疗作为治疗恶性肿瘤的一个重要手段。
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