unambiguous identification of the rous sarcoma virus primer molecule in uninfected cells was accomplished by directly purifying a 4s rna molecule from the bulk of host cell transfer rna and establishing structural similarities between this cellular 4s rna species and the rous sarcoma virus primer by two-dimensional paper electrophoresis of oligonucleotides obtained from a t1 ribonuclease digest of the rna species .
C0035711
rna
C0035668
rna