microsomal rna from sl2 cells was fractionated on oligo ( dt ) cellulose into three fractions : i was very similar to the non-fractionated rna , ii contained 28s and 18s rrna , iii [ poly ( a ) rna ] of 4 - 50s , constituted 1.0-2.1 % of the total rna pool and was still contaminated with rrnas .
C0035668
rna
C0035701
rrnas