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. 2019 Jun 20;9:4643. doi: 10.1038/s41598-019-39317-9

Figure 4.

Figure 4

Radiation-induced increase in extracellular ATP and the effect of TAT-Gap19 after single and fractionated irradiation. ATP release was measured 1 h, 6 h and 72 h after single radiation exposure (0.1 and 5 Gy) in (a) TICAE cells and (b) TIME cells and 72 h after fractionated irradiation exposure in (c) TICAE cells and (d) TIME cells. TAT-Gap19 was used to block Cx43 hemichannels. Data were analyzed with a nonparametric Mann-Whitney T-test. Values represent average ± SEM of 6–8 biological replicates. *Indicates the statistical differences compared to the respective 0 Gy controls, and statistical difference between single and fractionated irradiation for the same radiation doses. Indicates the statistical difference compared to the respective control condition (not treated with TAT-Gap 19), (c,d) indicates the statistical differences for either single or fractionated irradiation compared to their respective 0 Gy controls; */•p < 0.05; **/••p < 0.01; ***/•••p < 0.0001.