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TNF-α (Tumor Necrosis Factor α) (a), IL-8 (Interleukin 8) (b) and TGF-β1 (Transforming Growth Factor β1) (c) concentration in plasma in both groups of patients. Groups Tox ≤ 2 and Tox ≥ 3 correspond to patients presenting grade 2 or less and grade 3 or more of late skin reactions after RT according to RTOG/EORTC, respectively. # for p < 0.05 for Tox ≥ 3 compared to Tox ≤ 2 group.
