PROCEEDINGS OF THE NINTH FEBS MEETING vol.33. 529,440 Biochemistry of the cell nucleus.Mechanism and regulation of gene expression. Federation of European Biochemical Societies Ninth Meeting, Budapest, 1974.Ed. E.J.Hidvegi, J.Sumegi, P.Venetianer. Budapest 1975 Akademiai Kiado 8° s. VIII, 464,il. Proceedings of the Ninth FEBS Meeting vol. 33