The enzymatic incorporation of ribonucleotides into RNA and the role of DNA Jerard Hurwitz, J. J. Furth, Monika Anders, P. J. Ortiz and J. T. August J. Chim. Phys., 58 (1961) 934-944 Published online: 28 May 2017 DOI: 10.1051/jcp/1961580934