Fig. 1From: Effects of definitive chemoradiation on circulating immunologic angiogenic cytokines in head and neck cancer patientsIncrease serum VEGF levels at baseline are inversely correlated with tumor T-stage; p-values obtained via pairwise t-tests. T1 compared with T2 (p = 0.005), T1 compared with T3 (p = 0.03), T1 compared with T4 (p = 0.15), T2 compared with T3, T4 (p = 0.37)Back to article page