Ultrastructure of cell junctions in the anterior chamber and the papillate region. A The junctional complex in the anterior chamber consists of subapically located adherens junctions (AJ) and septate junctions (SJ) located beneath the adherens junctions B The junctional complex in the papillate region consists of subapically located adherens junctions (AJ) and extremely long and convoluted septate junctions (SJ) located beneath the adherens junctions C Adherens junctions consist of two electron dense plaques (arrowheads) at the cytoplasmic sides of lateral plasma membranes of two neighbouring cells and electron dense material in the intercellular space between the membranes D Septate junctions are visible as electron dense septa arranged in strings (arrow). Dilated intercellular spaces are visible where septate junctions are locally interrupted (arrowhead). Abbreviations: C – cuticle, AI – apical infoldings, SJ – septate junction.