Who or what is the preembryo?
D000028:Abortion, Induced; D033421:Beginning of Human Life; D002410:Catholicism; D033041:Embryo Research; D004622:Embryo, Mammalian; D005314:Embryonic and Fetal Development; D006805:Human Experimentation; D006806:Human Rights; D006801:Humans; D007206:Individuality; D019369:Life; D028681:Moral Obligations; D033281:Nontherapeutic Human Experimentation; D028723:Personhood; D011640:Public Policy; D012067:Religion; D012106:Research; D012941:Social Responsibility; D028725:Theology; D014481:United States
American Fertility Society; Biomedical and Behavioral Research; Donum Vitae; Genetics and Reproduction; Religious Approach; Vatican