Fig. 2From: Chemical composition, anti-biofilm activity and potential cytotoxic effect on cancer cells of Rosmarinus officinalis L. essential oil from TunisiaFluorescence microscopy with biofilm coverslips. Biofilms were stained with acridine orange. Bar equals 20 μm a S61 biofilm, control coverslip; b S61 biofilm treated with 50 μl/ml of ROEO. c Viability assessment within Staphylococcus epidermidis biofilm challenged with various ROEO concentrations using resazurin assay. The results are presented as means ± SD of three independent experiments. ** p < 0.01 or ***p < 0.001 versus control valuesBack to article page