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Relative quantification of the QS-related genes lasI, lasR, rhlI, rhlR, pqsA, pqsE, pqsR in P. aeruginosa ATCC 27853 and Pa3 biofilms formed in the presence of carboxypyrano-ant extract (A) or carboxypyCy-3-glc (B), at 64 μg/mL. Results are expressed as ΔΔCt ± confidence interval at 95% confidence. Differences between the experimental group and the control (absence of extract or compound) were statistically significant (*) when the confidence interval does not contain the zero.
