Fig. 4.

Expression of ZAP70 in T cells of patients and healthy controls. Absolute numbers of CD4 T cells expressing signalling molecule ZAP70 in breast cancer patients who had received prior adjuvant radiotherapy (RT) (n = 20) (filled square), radio-chemotherapy (RT + CT) (n = 21) (filled diamond) and in normal healthy controls (NC) (n = 11) (filled triangle). Data at each time point is shown as mean ± SEM. † Significant P value for repeated measurements ANOVA, comparing two groups of patients at four different time points. * Significant P value for ANOVA with Post Hoc test, comparing healthy controls and patients at three different time points. Differences were considered to be statistically significant if P was less than or equal to 0.05