Fig. 1From: Loss of survival advantage for deficient mismatch repair in patients with advanced colorectal cancer may be caused by changes in prognostic value of CD8+T cellExample of immunohistochemical staining of CD3, CD4, CD8, and PD-L1. a–d CD3, CD4, CD8, and positive PD-L1 expression at center of tumor; e–h CD3, CD4, CD8, and positive PD-L1 expression at invasive marginBack to article page