title: Pastoral letter on human embryonic stem cell research.
authors: Donald
authors: D
authors: Wuerl
mesh_terms: D002410:Catholicism; D033041:Embryo Research / Q000941:ethics*; D004622:Embryo, Mammalian / Q000166:cytology; D006801:Humans; D011057:Politics; D013234:Stem Cells; D026712:Value of Life