| IL-4/-13 | Interleukin-4/-13 |
| IL-4Rα | Interleukin-4-receptor-α-chain |
| IL-13Rα1 | Interleukin-13-receptor-α-1-chain |
| LLL12 | Specific inhibitor of STAT3 phosphorylation |
| N9, N10 | Capan-1 cells carrying a negative control plasmid |
| 2-11, 3-20 | Capan-1 cells transfected with shRNA targeting IL-4Rα |