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- Tanaka T, Bai T, Yukawa K, Utsunomiya T, Umesaki N. Reduced radiosensitivity and increased CD40 expression in cyclophosphamide-resistant subclones established from human cervical squamous cell carcinoma cells. Oncol Rep. 2005;14:941-8 pubmed..Furthermore, CD40 activation signals may be associated with the multidrug- and radioresistance in these cyclophosphamide-resistant subclones. ..
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