Figure 4.

Effect of local high‐dose irradiation on tumor growth and expression of miR‐24 and SP1 in mice bearing nasopharyngeal carcinoma tumor. Seven days after BALB/C mice transfected with CNE1 cells, tumors were irradiated with a single dose of 12 Gy/1f/1d, whereas control mice received no radiotherapy. (A). Growth of tumor in irradiated mice. (B). Expressions of miR‐24 and (C).SP1 were determined by using Quantitative Real‐Time PCR in tumors. The results were represented as mean ±SD. *P < 0.05 compared with control.