title: Ethics of embryonic stem cells.
authors.forename: Stephen E
authors.initials: SE
authors.lastname: Levick
mesh_terms: D019976:Cloning, Organism / Q000941:ethics*; D033041:Embryo Research / Q000941:ethics*; D004622:Embryo, Mammalian / Q000166:cytology*; D005307:Fertilization in Vitro / Q000941:ethics; D006801:Humans; D009014:Morals; D013234:Stem Cells; D015053:Zygote