in this study , ams and its demethylated derivative , 3'-amino-3'-deoxyadenosine ( 3'-ama ) have been used to compare their effects on normal ( imr 90 ) versus transformed ( ag 2804 ) human fibroblasts with regard to preribosomal rna ( pre-rrna ) transcription , the processing of this rna , and structural changes in the nucleolus .
C0035668
rna
C0040649
transcription