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A. VEGF mRNA level and B. LDH activity were assessed in the culture medium of C6 glioma cells after treatment with carbon ion and X-ray radiation. Data represent the mean ± standard error of the mean from three replicates. *P<0.05, **P<0.01, ***P<0.001 vs. controls (0 Gy); #P<0.05 vs. 8.0 Gy group.
