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Effect of dissolved oxygen on ROS generation by the interaction between PpIX and X-ray. The PpIX mixture was bubbled by N2, air, and O2 gas. (A) •OH measured by APF. (B) O2•- measured by DHE. (Data given with n = 6, †: p < 0.01 vs. the same X-ray dose (Gy) under the N2 gas bubbling condition, ‡: p < 0.01 vs. the same X-ray dose (Gy) under the air bubbling condition in a one-way ANOVA and Tukey post-test)
