title: Human identity and the primitive streak.
authors.affiliation: Green College, Oxford University, USA.
authors.forename: M
authors.initials: M
authors.lastname: Lockwood
mesh_terms: D026683:Advisory Committees; D033421:Beginning of Human Life; D001675:Bioethics; D033041:Embryo Research; D004622:Embryo, Mammalian; D005775:Gastrula; D006801:Humans; D019369:Life; D008128:Logic; D028723:Personhood; D012106:Research / Q000592:standards*; D038522:Twinning, Monozygotic; D014430:Twins, Monozygotic