Fig. 2From: Oral colonisation by antimicrobial-resistant Gram-negative bacteria among long-term care facility residents: prevalence, risk factors, and molecular epidemiologyBiofilm production by Acinetobacter spp. isolates (a) and Pseudomonas spp. isolates (b). Bacteria were grown in LB medium in the absence or presence of 1% glucose. Biofilm formation was measured at OD590nm using a microtiter plate biofilm-formation assay and the crystal violet dye. The average and standard error of the mean for each sample are shownBack to article page