Figure 2 | Scientific Reports

Figure 2

From: Multiparametric radiobiological assays show that variation of X-ray energy strongly impacts relative biological effectiveness: comparison between 220 kV and 4 MV

Figure 2

DNA double-strand break measurements (γ-H2Ax foci). Number of γ-H2AX foci in G0/G1 primary HUVECs as a function of time since exposure. The analyses were performed on cells exposed to irradiation with 4 MV (blue curves) and 220 kV (orange curves) beams. Mean number of γ-H2AX foci per nucleus for non-irradiated cells at 30 min are represented by squares, small symbols correspond to the mean number of γ-H2AX foci per nucleus for the 2 Gy dose and large symbols correspond to 5 Gy irradiation. The mean ± standard deviation (s.d.) was calculated from 2 independent experiments. For each condition, the average number of analyzed cells was around 600.

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