three transcripts ( transcripts a , b , and c ; molecular weights , 2.55 x 10 ( 6 ) , 1.95 x 10 ( 6 ) , and 1.56 x 10 ( 6 ) , respectively ) were identified as in vitro rna products of m. xanthus phage mx1 dna transcription when either e. coli or m. xanthus rna polymerase was used .
C0040649
transcription
C0035681
rna polymerase