title: Reply to Harris.
authors.affiliation: Biomedical Ethics Unit, McGill University, Montreal, Canada H3A 1W9. glannon@falaw.lan.mcgill.ca
authors.forename: Walter
authors.initials: W
authors.lastname: Glannon
mesh_terms: D016922:Cellular Senescence; D026689:Ethical Analysis; D024861:Genetic Enhancement; D015276:Health Care Rationing; D006801:Humans; D008136:Longevity; D019222:Mind-Body Relations, Metaphysical; D028723:Personhood; D011640:Public Policy; D012922:Social Change; D012935:Social Justice; D013234:Stem Cells