Figure 1From: The TGF-β1 dynamics during radiation therapy and its correlation to symptomatic radiation pneumonitis in lung cancer patientsThe pattern of the changes of the mean TGF-β1 level in the RP group and the non-RP group. The TGF-β1 level began to increase at the end of RT in the RP group and it became significantly higher at 4 weeks after RT (p = 0.007). However TGF-β1 level of patients who did not develop RP began to decrease relative to their pretreatment level after middle of RT. The solid line shows the mean level of TGF-β1 in the RP group and the dashed line shows the mean level of TGF-β1 in the non-RP group. The data are presented as mean ± standard error of the mean.Back to article page