Fig. 2From: Perioperative changes in osteopontin and TGFβ1 plasma levels and their prognostic impact for radiotherapy in head and neck cancerBox and whisker plots demonstrate the distribution plasma levels of a) OPN and b) TGFβ1 in the different patient groups and healthy controls at time point T0 before treatment. Bars indicate statistical significant differences with p < 0.05Back to article page