Fig. 8

The expression levels of MEK, ERK, PD-L1, and KI67 were assessed using hematoxylin and eosin (HE) staining and immunohistochemical staining. *P < 0.05, **P < 0.01 and ***P < 0.001
The expression levels of MEK, ERK, PD-L1, and KI67 were assessed using hematoxylin and eosin (HE) staining and immunohistochemical staining. *P < 0.05, **P < 0.01 and ***P < 0.001