the 18s rrna derived degradation product observed in vivo from the chick oviduct had the same mobility in denaturing agarose gels as the 18s rrna cleavage product liberated on incubation of isolated oviduct ribosomes with purified 2-5a-dependent rnase and exogenous 2-5a .
C0035701
rrna
C0035553
ribosomes