Fig. 2From: Probiotics Streptococcus salivarius 24SMB and Streptococcus oralis 89a interfere with biofilm formation of pathogens of the upper respiratory tractInhibition of biofilm formation during time. Data are expressed as mean absorbance ± standard deviation (n = 3). Black bars = controls; grey bars = mixed co-cultures; white bars = transwell co-cultures; * P ≤ 0.05; ** P ≤ 0.01; *** P ≤ 0.001Back to article page