2.9. Lidocaine Enhances the Production of the Anti-Cancer-Related Cytokine IFN-γ by Sorted CD8+ TIICs Through G-Protein-Coupled Receptor (GPCR) Signaling and Increases IL-12 Production by Sorted CD14+ TIICs by the TLR4 Signaling Pathway. Here, TLR4 is linked to cancer.