[Multistaged cryopreservation of tympano-ossicular grafts. II. Transplantation procedures].

Tympano-ossicular transplants conserved by multistaged cryopreservation in liquid nitrogen on AT -196 degrees C were transplanted ortho and heterotopically in rats. This experimental histological investigation showed well the biofunctionality and biocompatibility (preservation of osteoneogenetically potent cells, signs of reorganization and decreased transplantative reactions on such grafts). Thus adequate preservation of tissues by means of this procedure was proven.