COLLAGEN ARRANGEMENTS IN URETER

The collagen fibres of rabbit and human ureter were exposed by digesti on with trypsin and hyaluronidase. The fibre structure was examined us ing an SEM and examples of the inner and outer fibre structures are sh own together with the, effects of different types of mechanical strain . An interesting difference between the arrangements of the inner fibr es of human and rabbit was seen where the human ureter had a cross-ply structure while in the rabbit it was helical.