Supplementary Figure S1. PD-L1 (green) was expressed in (A) CD3+ T lymphocytes (magenta/pink), (B) CD68+ macrophages (red), panCK+ (cyan/light blue) tumor cells, and (C) tumor cells (red). PD-1 expression on CD8+ T lymphocytes was also observed.
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Saberzadeh-Ardestani et al. (2024) studied this question.
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