Fig. 2From: Stratification of ovarian tumor pathology by expression of programmed cell death-1 (PD-1) and PD-ligand- 1 (PD-L1) in ovarian cancerMembranous staining of PD-L1 positive cells in ovarian tumors. Diffuse membranous staining of almost all ovarian cancer cells (a) versus focal strong membranous staining in a few scattered tumor cells positive for PDL1 (b)Back to article page