H-I. Rag1-/- mice which received 1 x 105 IL-17A+cells of indicated genotypes and (I) total cell numbers (mean +SEM) of infiltrates isolated from CNS and used for further analysis.Data (H-L) consist of Rag1-/-mice which received WT (n=6), IL-1R1ΔT (n=3) and IL-1R1-/- (n=4) cells polarized in the presence of IL-23 prior to transfer. All experiments were performed at least twice with similar results. 