Figure 3. Results from reverse transcription polymerase chain reaction (RT-qPCR) comparing the changes in mRNA levels of (A) HLA-E and (B) HLA-F in 2 radioresistant (GBM1-R, GBM2-R) and 2 radiosensitive parental (GBM1-C, GBM2-C; control) primary GBM cell cultures from 24 h to 72 h after receiving a dose of 0, 5 or 10 Gy. Average values (ratios of normalized expression values at 72 h to values at 24 h) are denoted by points connected with a dashed line. Linear regression (trend) lines are shown to demonstrate the trend of dose-dependent changes in HLA-E and HLA-F expression.
