we investigated the ribonucleolytic breakdown of poly ( u ) , poly ( a ) , rna trascribed from calf thymus dna with e. coli rna polymerase , ribosomal rna , trna and mengovirus rna by an enzyme fraction obrained from a postribosomal supernatant of ehrlich ascites tumor cells .
C0035701
ribosomal rna
C0035668
rna