Figure 3
(a) Representative examples of HDCs observed with γ-H2AX immunofluorescence, stained in green (FITC) and counterstained with DAPI (blue). The nucleus marked by the white arrow was not considered as HDCs. (b) Percentage of HDC as a function of post-irradiation time for each photoactivatable drug irradiated separately and added directly to the culture medium at the indicated times (corresponding γ-H2AX data are shown in Fig. 2). Each plot represents the mean ± standard errors of two independent replicates at least. (c) The percentage of HDC assessed at 0, 10 min, 1 h and 4 h post-irradiation shown in (b) were plotted against the corresponding γ-H2AX data shown in Fig. 1(b). Dotted lines correspond to linear regression when all data were gathered (r = 0.75). |