title: The authors' reply.
authors.affiliation: Departments of Dermatology and Internal Medicine University of California Davis Medical Center Sacramento, CA.
authors.forename: Erik
authors.initials: E
authors.lastname: Ames
authors.forename: William J
authors.initials: WJ
authors.lastname: Murphy
mesh_terms: D000818:Animals; D053595:Embryonic Stem Cells / Q000276:immunology*; D006084:Graft Rejection / Q000276:immunology*; D006801:Humans; D007694:Killer Cells, Natural / Q000276:immunology*; D033581:Stem Cell Transplantation