title: Corneal tissue preservation for penetrating keratoplasty. Past, present, future.
mesh_terms: D002102:Cadaver; D016039:Corneal Transplantation; D005615:Freezing; D049673:History, 20th Century; D006801:Humans; D014021:Tissue Preservation / Q000266:history*; D014183:Transplantation, Heterologous / Q000266:history; D014184:Transplantation, Homologous / Q000266:history