Figure 2 presents immunodetection of PD‐L1 in protein fractions obtained from the cytoplasm (CP), membrane (M), nuclear soluble (NS), nuclear chromatin‐bound (NCB), and cytoskeleton (CS) of the representative HNC cell line SCC‐9 (A), as well as a representative primary tumor sample of a HNSCC patient (B). Here, CD274 is linked to head and neck squamous cell carcinoma.