uncapped messenger rnas ( mrnas ) encoding calf preprochymosin , chicken prelysozyme , or escherichia coli beta-glucuronidase ( gus ) were synthesized in vitro , with or without a 5'-terminal 67-nucleotide sequence ( omega ' ) derived from the untranslated 5'-leader ( omega ) of tobacco mosaic virus ( tmv ) rna .
C0035696
messenger rnas
C0035668
rna