Figure 2.

Tissue engineering strategies. Tissue engineering approaches can be acellular or cellular. The acellular strategy uses natural or synthetic scaffolds that aim to improve the body's own capability at repairing itself and differentiating into new tissue. The cellular strategy uses donor cells that can be seeded by incorporation into the scaffold or used alone (stem cell approach). At present, the cell seeded approach has demonstrated superiority in the formation of a tissue engineered bladder.