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(a) The structure of pSilent-xyiH vector. PtrpC: promoter of trpC gene. TtrpC: terminator of trpC gene. Hyg: hygromycin antibiotic resistance gene. (b) The structure of pPtef1-ble-xyl vector. Pgpd: promoter of gpd gene. Tgpd: terminator of gpd gene. ble: phleomycin antibiotic resistance gene.
