Additional file 1: Figure S1. The AR−/− mice genotyping and the expression level of AR in AR−/− mice. (A) AR null allele were identified by northern blot analysis. The expected bands of ∼119 bp is observed in the wild-type mice while not seen in AR−/− mice. (B) Western blot analyze the AR expression in the AR−/− mice. (C) Immunofluorescence analyze the AR expression in the spinal cord of AR−/− mice at 3 day following BPRA...