Fig. 6: miR-337-3p inhibited EMT of 4T1 cells in vivo.

a–d Immunohistochemical staining of E-cadherin and vimentin in tumor samples of six groups (n = 3). e–h The expression of E-cadherin and vimentin in tumor samples of six groups were detected by western blot (n = 3). The intensity of the bands was normalized to GAPDH and shown in histogram. i–l Immunohistochemical staining of STAT3 and p-STAT3 in tumor samples of six groups (n = 3). m–p The expression of STAT3 and p-STAT3 in tumor samples of six groups were detected by western blot (n = 3). The intensity of the bands was normalized to GAPDH and shown in histogram. Data are shown as the mean ± SD; *P < 0.05; **P < 0.01; ***P < 0.001.