analysis of the termination of transcription by yeast rna polymerase i ( pol i ) using in vitro run-on experiments in both isolated nuclei and permeabilized cells demonstrated that pol i does not traverse the whole intergenic spacer separating consecutive 37s operons , but terminates transcription before reaching the 5s rrna gene , that is within nts 1 .
C0007610
nuclei
C0007634
cells