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Vol 4(1970) N 1 p. 34-38; A.S. Girshovich, M.A. Grachev, and T.A. Chimitova The Chemical Modification of Guanylyl(3' -5')cytidine by N-Cyclohexyl-N'β(4-methylmorpholino)ethylcarbodiimide: Influence of the Modification of the Stability of the Phosphodiester Bond to the Action of Guanylribonuclease from Actinomycetes |