LAMP1 and head and neck squamous cell carcinoma: To evaluate the potential of these cells in HNSCC, we expanded this population from PBMC from CMV positive patients by culturing cells in the presence of CMV UL-40 peptide VMAPRTLFL or a control peptide (VMAPRTLLL), and compared the ability of NK cells to secrete IFNγ and CD107a as surrogates of cytotoxicity.