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Effect of root barks dichloromethane (RBDCM) extract in Pseudomonas aeruginosa quorum sensing (QS) regulator genes (a: lasI; b: lasR; c: rhlI; d: rhlR). RBDCM extract was tested at 100 µg/ml. Dimethyl sulfoxide (1% [vol/vol], final concentration) was used as solvent control and naringenin (Nar: 4 mM, final concentration) as QS inhibitory control. *Significance at P < 0.05. All experiments were performed in six replicates
