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Item Metadata only Effect of toxin gene promoter on expression of chloramphenicol acetyltransferase gene (cat) in Bacillus thuringiensis(Mahidol University. Mahidol University Library and Knowledge Center, 2024) Supat Chareonpornwattana; Amaret Bhumiratana; Somsak Pantuwatana; Watanalai Panbangredwith the frequency of 2.1 x 10-7 and 1.7 x 10-7 respectively (number of transconjugant Per number of recipient before mating). The presence of cloned promoter region in the constructed plasmid was confirmed by restriction pattern and Southern blot hybridization... subsp. israelensis c4Q2-72 and 4Q2-72 transconjugant upon daily subculture for at least 4 weeks in LB broth medium without any selective pressure.