Fig. 1.

Squamous cell carcinoma of the vulva showing high expression of PD-L1 in the tumor cells (PD-L1-positivity in 95% of the tumor cells; TPS 5, CPS ≥ 100) and moderate expression of PD-L1 in stromal immune cells (ICS 2). c and d Refer to the inset in b. a HE, b–d PD-L1. Scale bars a and b 2.0 mm, c 200 µm, d 100 µm