Fig. 2From: Effects of definitive chemoradiation on circulating immunologic angiogenic cytokines in head and neck cancer patientsTrends in serum angiogenic cytokine concentrations comparing the beginning and end of treatment, as evaluated by non-parametric Wilcoxon signed rank tests. Each line represents an individual patient. Serum levels of Ang1 (p < 0.0001) and VEGF decreased (p < 0.0001) over the course of treament. In contrast, there were significant increases inserum levels of Ang2 (p < 0.0001) and PLGF (p < 0.0001)Back to article page