fig3
Figure 3. Kaplan-Meier OS curves for CD4+ and CD8+ T cells in patients treated with SBRT vs. CFRT. One day post-treatment, significant differences in OS were observed between high (red) and low (blue) levels of CD4+ and CD8+ T cells in both SBRT and CFRT groups (P < 0.05 for each). OS: Overall survival; CFRT: conventionally fractionated radiotherapy; SBRT: stereotactic body radiotherapy.