TLR2 and cancer: The anti-cancer activity of BCG-CWS operates partly through TLR2 signal [22]–[24], hence, we investigated the adjuvant activity of synthetic TLR2/TLR6 ligands derived from Staphylococcus aureus, 16 S-[2,3-bis(palmitoyl)propyl]cysteine (Pam2) lipopeptides.