Biological uncertainties about reproductive cloning.
D000818:Animals; D002417:Cattle; D002467:Cell Nucleus / Q000235:genetics; D019976:Cloning, Organism; D004622:Embryo, Mammalian / Q000502:physiology; D005820:Genetic Testing; D006801:Humans; D007558:Italy; D053652:Nuclear Transfer Techniques; D010287:Parent-Child Relations; D012099:Reproductive Techniques; D012756:Sheep; D035501:Uncertainty; D014481:United States