Figure 5. High-magnification longitudinal view of the type VI collagen aggregates in the trabecular sheets. Only single transverse bands are evident (chevrons), and their axial periodicity is approximately 109 nm. The rod-like segments of the collagen VI tetramers (arrows) cross the transverse bands at different angles. Proteoglycans are also seen in the matrix (arrowheads). Several 10-nm gold particles used for tomographic reconstruction appear as black dots in the electron micrograph. Scale bar = 200 nm.