Fig. 1. Quantification of biofilm formation of each strains among gram-negative rods (A) and gram-positive cocci and yeasts (B) using measuring optical density of crystal violet stained biomass at 620 nm. The standard errors are expressed as error bars. The strains marked with asterisks are submitted to the evaluation of biofilm removal. Type strain names were shaded and the strains derived from clinical isolates were given names starting with AMC.