document: after 7 days of initial treatment. Brain magnetic resonance (MR) images were obtained from each animal subgroup to measure the brain tumour volume after various treatments (Figure 6d). The effect of EGFR and IKKα dual-gene silencing and thereby NF-κB downregulation by TrQβ@b-3WJsiEGFR Let-7g on tumour progression with low-dose X-ray irradiation (2Gy) was analysed, and the results are presented in Figure 6e and f. The tumour-bearing mice without any treatment (control; 160.5 ± 44.0 mm3 on Day 34