To assess the distribution of the CD4+ and CD8+ T cell subsets in human lung cancer, we analyzed the Tn, Tcm, Tem, and Teff of the PBMCs from the healthy donors and NSCLC patients by flow cytometry according to established surface markers (Tables 1 and 2) [1, 2]. The gene discussed is CD8A; the disease is non-small cell lung carcinoma.