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5 × 8 Gy SBRT decreases tumor cell density. (a) Hematoxylin and eosin (H&E) staining of ex vivo BxPC3 tumor tissue sections show a significant decrease in tumor cell density 1 day post-SBRT compared with non-irradiated tumors. No significant differences are seen in tumor cell density between irradiated and non-irradiated tumors at 14 days post-SBRT. (b) Representative images show H&E-stained BxPC3 tumor sections. Scale bar = 200 μm. n = 7 mice per group. *p < 0.05, **p < 0.01.
