Figure 4
Histological images of mandibular condylar cartilage and tibial growth plate from a 2-week-old rat following toluidine blue staining. (a) Sagittal section of mandibular condylar cartilage. Black dashed lines show the divided region of condyle, including the fibrous layer (F), proliferating layer (P), maturative layer (M), and hypertrophic layer (H). Red lines in (b) show the center of each part used to measure thickness of mandibular cartilage. (c) Longitudinal section of tibial cartilage, including the resting zone (RZ.Th), proliferative zone (PZ.Th), hypertrophic zone (HpZ.Th), and height of growth plate (Gpc.Th). (d) Twelve parallel lines drawn through tibial cartilage to permit measurements. Scale bar = 100 μm.
