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trp operon Attenuator RNA polymerase Stem-loop, others, purple, text, control png -
trp operon lac operon Bacteria L-arabinose operon, others, miscellaneous, angle, text png
lac operon Repressor Operator Gene, lacy, miscellaneous, angle, text png
lac operon Prokaryote Transcriptional regulation, Transcription Factor, text, activator, prokaryote png
