Fig. 7

Histological analysis and safety evaluation. A Representative H&E, TUNEL and Ki67 staining images of exfoliated tumor tissue in different treatment groups. Scale bars, 50 μm for H&E and TUNEL images and 40 μm for Ki67 images. B Representative H&E staining images of exfoliated hearts and livers in different treatment groups. Scale bar, 50 μm. C Serum levels of AST and ALT in tumor-bearing mice with different treatment. Data are shown as mean ± SD (n = 3)