Fig. 7. Symphyseal apoptosis. Coronal sections (6 µm) of `middle' joint sites from U-diet (A) and O-diet (B) subadults tunel stained to identify fragmented DNA of apoptotic chondrocytes in the FC pad. In the high-power views of the ventral joint with the FC pad, O-diet rabbits exhibit numerous apoptotic chondrocytes vs U-diet rabbits (red arrows).