Fig. 6From: Patient-derived tumor immune microenvironments in patient-derived xenografts of lung cancerImmunohistochemical staining of two PDXs with anti-human CD19, CD68, and PD-L1 antibodies. Human CD19+ and CD68+ cells were detected in the stroma and/or the intraepithelial cancer structure, while PD-L1+ cells were mainly detected in the in stroma. Arrows indicate positive cellsBack to article page