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Biotest of final extract on biofilm formation. Measurements of serial dilutions of the purified extract on biofilm formation in PAO1 and PAO-MW1. Blank control of PAO-MW1 and PAO1 were set by addition of methanol, positive control of PAO-MW1 was set by addition of 100 nmol/l of OdDHL, 2 μmol/l BHL and methanol. For PAO1, no positive control was set. Each value is a mean of triplicate measurements ± standard deviation. Data are not statistically different (P < 0.05)
