human simian virus 80 ( sv80 ) cells transformed by simian virus 40 ( sv40 ) synthesize substantial quantities of the sv40 large t-antigen ( henderson & livingston , 1974 ; tjian , 1978 ) and cytoplasmic , poly ( a ) -containing rna species that exhibit spliced structures characteristic of the sv40 , early messenger rna species that encode both large and small t-antigens ( flint & beltz , 1979 ) .
C0035668
rna
C0035696
messenger rna