Fig. 5

Salivary cytokines. Levels of salivary cytokines before and after fractionated irradiation at days − 3, 9/12, 35, 70 and 105. P-values are shown only between groups with p ≤ 0.05. Data are presented as mean ± SD pg/ml cytokine per total protein mg/ml. TM = transmission protons, BP = Bragg peak protons.