|  | RA-SFB | |
---|---|---|---|
Cytokine | Detection limit of the ELISA (pg/ml) | First passage (n = 3) | Tenth passage (n = 3) |
IL-1β | 5 | Not detectable | Not detectable |
IL-6 | 5 | 15,800 ± 2110 | 790.0 ± 35.6* |
IL-10 | 1.5 | 35.7 ± 34.2b | 9.0 ± 7.5b |
IL-15 | 1 | Not detectable | Not detectable |
IL-18 | 94 | Not detectable | Not detectable |
TNF-α | 1.7 | 22.1 ± 1.1 | 15.1 ± 0.7* |