| abstract |
Donor tissue containing antigen-presenting cells (APCs) can be modified to reduce rejection when the donor tissue is used as an allograft by exposing the donor tissue which has been treated with a photosensitizing agent having an absorption maximum between 400-900 nm to a wavelength absorbed by the photosensitizing agent so as to attenuate the APCs in the donor tissue but wherein the light is not cytotoxic to the APCs. |