Figure 3
3D reconstruction of the tidemark. Sequential sections (a-g) from a normal COJ region demonstrate the continuity of apparently discontinuous non-calcified cartilage prolongations which protrude into the calcified cartilage and abut onto a bone marrow space. The lower set of photographs has been edited to show more clearly the sections through the prolongations. Sections were 10 μm thick and every 10th section is shown.