Additional file 2.

Figures showing the receptor activator nuclear factor-kappaB ligand (RANKL) distribution pattern in cartilage. Figure S1 in Additional file 2: A figure showing extracelullar expression of RANKL in the rabbits with antigen-induced arthritis (AIA). Figure S2 in Additional file 2: A figure showing negative control of RANKL expression in the same area (original magnifications ×400).

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Martínez-Calatrava et al. Arthritis Research & Therapy 2012 14:R149   doi:10.1186/ar3884