Fig. 2From: The presence of tumour-infiltrating lymphocytes (TILs) and the ratios between different subsets serve as prognostic factors in advanced hypopharyngeal squamous cell carcinomaCorrelations of the numbers of a CD8 and Foxp3, b CD8 and CD4, and c CD8 and Foxp3 infiltrating lymphocytes (P < 0.001)Back to article page