Figure 4From: Asporin, a susceptibility gene in osteoarthritis, is expressed at higher levels in the more degenerate human intervertebral discSectioned en face, this sand rat lumbar vertebral specimen shows similar asporin localization to that seen in the human disc. The greatest asporin presence is in the outer annulus, with fewer cells showing asporin content in the inner annulus (arrows mark cells negative for asporin immunolocalization) (× 360).Back to article page