Fig. 7From: Increased migratory activity and cartilage regeneration by superficial-zone chondrocytes in enzymatically treated cartilage explantsHistological localization of PDGF receptor-β. Osteochondral tissue was harvested from the medial condyle of the tibia of 3-month-old pig (D). Chondrocytes in the superficial zone showed positive staining for PDGF receptor-β in the peripheral region of the osteochondral tissue (A). In the central region of the osteochondral tissue, a few positive cells were observed in the superficial zone (B). No positive cells were detected in the deep zone (C)Back to article page