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Guerrero I, Kornberg TB.Guerrero I, et al. Among authors: kornberg tb.Semin Cell Dev Biol. 2014 Sep;33:52-62. doi: 10.1016/j.semcdb.2014.06.016. Epub 2014 Jun 30.Semin Cell Dev Biol. 2014.PMID: 24994598Review.