title: Stem cells: answers to three questions.
authors.affiliation: The National Catholic Bioethics Center, Boston, MA, USA.
authors.forename: Albert S
authors.initials: AS
authors.lastname: Moraczewski
mesh_terms: D002410:Catholicism; D002460:Cell Line; D033041:Embryo Research / Q000941:ethics*; D004622:Embryo, Mammalian; D006801:Humans; D028723:Personhood; D013234:Stem Cells