Assessment of Immune Cell Populations in Tumor Tissue and Peripheral Blood Samples from Head and Neck Squamous Cell Carcinoma Patients

Figure 1

Immune cell subtypes evaluated within the inflammatory infiltrate in the tumor microenvironment of head and neck squamous cell carcinoma (HNSCC). (a) (CD4⁺) T lymphocytes within the peritumoral inflammatory infiltrate. (b) Numerous (CD8⁺) T cells within the intratumor inflammatory infiltrate (E). (c) (CD19⁺) B lymphocytes, mostly forming small aggregates present within the peritumoral inflammatory infiltrate. (d) Few (CD56⁺) NK cells within the peritumoral inflammatory infiltrate. Original magnification ×400.

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