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Dose–survival curves fitted using a multi-target single-hitting model showing the impact of checkpoint kinase 2-small interfering RNA (CHK2-siRNA) in A549 cells treated with CpG oligodeoxynucleotide plus X-rays.
Notes: The sensitization enhancement ratio was higher in the CpG + X-ray group (1.46) than in the CHK2-siRNA + CpG + X-ray group (1.05).
