Fig. 6. TMJ type II collagen. Coronal sections (6 µm) of middle sites in 4-month old U-diet (A) and O-diet (B) subadults were stained with a primary antibody directed against type II collagen. In the low-power views of the articular cartilage and subchondral bone, more intense staining of TMJ articular cartilage in A vs B indicates less type II collagen and thus diminished viscoelasticity in O-diet rabbits.