Fig. 8. TMJ apoptosis. Coronal sections (6 µm) of middle joint sites from U-diet (A) and O-diet (B) 4-month old subadults were tunel stained to identify cellular apoptosis in articular cartilage. In high-power views of the articular surface and subchondral bone, O-diet rabbits exhibit elevated chondrocyte apoptosis vs U-diet rabbits (red