title: Stem-cell rift shows difficulty obtaining eggs.
authors.forename: Antonio
authors.initials: A
authors.lastname: Regalado
mesh_terms: D019976:Cloning, Organism / Q000379:methods; D033041:Embryo Research; D004622:Embryo, Mammalian / Q000166:cytology; D005260:Female; D006801:Humans; D007723:Korea; D018587:Oocyte Donation / Q000191:economics / Q000941:ethics / Q000379:methods; D017149:Private Sector; D012109:Research Support as Topic; D012306:Risk; D015871:Scientific Misconduct; D013234:Stem Cells; D014481:United States