title: Dolly researcher plans further experiments after challenges.
authors.forename: D
authors.initials: D
authors.lastname: Butler
mesh_terms: D000818:Animals; D001940:Breast / Q000166:cytology; D019976:Cloning, Organism; D004272:DNA, Mitochondrial; D005260:Female; D005333:Fetus / Q000166:cytology; D011247:Pregnancy; D015203:Reproducibility of Results; D012106:Research; D012606:Scotland; D012756:Sheep; D013234:Stem Cells / Q000166:cytology
chemical_list: D004272:DNA, Mitochondrial