title: The pre-embryo: an illusory category of convenience.
authors.affiliation: Georgetown University Medical Center, Washington, D.C, USA.
authors.forename: E D
authors.initials: ED
authors.lastname: Pellegrino
mesh_terms: D019924:Embryo Disposition; D004622:Embryo, Mammalian; D004992:Ethics, Medical; D005307:Fertilization in Vitro / Q000009:adverse effects*; D006801:Humans; D007206:Individuality; D009014:Morals; D015053:Zygote