Additional file 1: Figure S1. Characterization of naïve WT and cIAP2−/− mice. Hematoxylin and eosin (A), Luxol Fast blue (B) and GFAP immunofluorescence (C) staining of naïve WT and cIAP2−/− lumbar spinal cords (L2–L4) (Quantification; n = 4, 4). (D) Quantification of fluorescein sodium salt accumulation in different CNS regions of naive WT (n = 3) and cIAP2−/− (n = 3) mice (*p < 0.05, T test).