FIGURE 2.

Role of miRNA‐218‐5p in the growth of radiation‐induced lung carcinoma cells. (a) MTT assay was used to evaluate metabolic survival of parental cells and radiation‐resistant cell lines under different doses of X‐rays. (b) RT‐qPCR was used to determine miRNA‐218‐5p expression in radiation‐resistant cell lines. (c) RT‐qPCR was used to determine miRNA‐218‐5p expression in miRNA‐218‐5p‐mimic plasmid. (d) RT‐qPCR was used to determine miRNA‐218‐5p expression after transfection of miRNA‐218‐5p‐mimic into radiation‐resistant cell lines. (e) MTT assay was used to evaluate the proliferation of irradiated cell lines after transfection of the miRNA‐218‐5p‐mimic. (b), p < 0.05, radiation‐resistant cell lines compared with the control cell lines. (c–e), *p < 0.05, miRNA‐218‐5p‐mimic compared with the NC