Fig. 4

Effect of treatment regimen on early homeostatic cytokines. Patient serum collected prior to treatment (pre), immediately following completion of radiation therapy (post) and at the end of treatment (end) from patients on i) a conventionally fractionated regimen (Fract) versus ii) a hypofractionated regimen (Hypo) were tested for (a) IL-7 and (b) IL-15 cytokine levels by ultrasensitive multiplex assay. Key: NS – not significant. * p < 0.05, ** p < 0.01, *** p < 0.001