dna-rna hybridization studies , using nuclear rna 's ( nrna 's ) labeled in vivo and in vitro with high specific radioactivities , were performed to compare the nrna populations of normal rat liver , livers treated with 3'-methyl-4-dimethylaminoazobenzene ( 3'-me-dab ) , and 3'-me-dab-induced hepatomas .
C0023884
livers
C2239176
hepatomas