since the kinetics of appearance of labeled rna indicates that the nucleus was not injured during the transfer , and since the transferred nuclear pool of labeled acid-soluble rna precursors is inadequate to account for the amount of cytoplasmic rna label , it is concluded that cytoplasmic ribosomal rna is derived from acid-insoluble nuclear rna and is probably transported as an intact molecule .
C0035668
rna
C0035700
nuclear rna