Additional file 3 of Age-related changes in T lymphocytes of patients with head and neck squamous cell carcinoma

Additional file 3: Figure S3. This summary shows the connections between the young and the old subjects in this study. On the left side are mentioned the young volunteers on the right side the old. The young subjects have more CD8+ Tc cells expressing mainly CCR7 and CD73, while the old subjects have less, expressing more PD1. The young tumor patients have an active immune-system with a strong tumor-induced immune suppression with many Treg, while old patients have a senile immune system with a weak immune suppression and less Treg.