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. 1998 Jul 13;142(1):285–294. doi: 10.1083/jcb.142.1.285

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Localization of decorin and collagen IX in adult bovine articular cartilage. Sections of tarsometatarsal joint cartilage were incubated with antiserum against decorin (left) and collagen IX (right). Bound antibodies were detected by indirect immunoperoxidase staining. Decorin and collagen IX show differential distribution with partial overlapping. Both appear enriched in the most superficial cartilage. In the zone representing the deeper two-thirds of the tissue, strong staining for collagen IX is restricted to the territorial matrix surrounding the chondrocytes. Staining for decorin in the deep zone, by contrast, is strongest in the interterritorial matrix. Bar, 70 μm.