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Effect of the test solutions upon biofilms’ viable cells (a), biomass (b) and metabolic activity (c) when exposed to 500 µg mL−1 M3Glu (■), 250 µg mL−1 M3Glu (□), cM3Glu/NChA (■; 500 µg mL−1 M3Glu with 100 µg mL−1 NChA) and M3Glu/NCh3 (■; 250 µg mL−1 M3Glu with 50 µg mL−1 NChA). The letters above each bar indicate the statistically significant (p < 0.05) differences found for each microorganism.
