Fig. 2
From: Recombinant human endostatin combined with radiotherapy inhibits colorectal cancer growth
Pathological features of the tumor specimens in each group. HCT-116 cells in nude mice from the following groups (HE staining, 200×): a: control; b: endostatin; c: radiotherapy; d: radiotherapy with endostatin treatment. The tumor cells in the control group were rich and exhibited obvious atypia, while the tumor cells in other groups were replaced by fibrous tissue and displayed signs of necrosis, degeneration, and calcification