Baby steps: new work shows the promise, and pitfalls, of embryonic stem-cell research.
D019976:Cloning, Organism; D033041:Embryo Research / Q000941:ethics / Q000331:legislation & jurisprudence; D033161:Government Regulation; D006801:Humans; D007221:Industry; D010312:Parthenogenesis; D013234:Stem Cells / Q000502:physiology; D014481:United States