Case Report
Copyright ©The Author(s) 2020.
World J Gastrointest Oncol. Oct 15, 2020; 12(10): 1209-1215
Published online Oct 15, 2020. doi: 10.4251/wjgo.v12.i10.1209
Figure 3
Figure 3 Immunohistochemical staining for programmed death-ligand 1 (40 ×). A: Positive control (Ab 28-8); B: Tumor (Ab 28-8).