Fig. 2

Atomic force microscopy (AFM) surface profiles of biofilms (12 h). 3D AFM images of biofilms cultured in the absence (a) and presence of DNase I (c). Scale is a relative color scale. A is scaled to 467.7 nm, and C is scaled to 490.2 nm. Measurements were taken between cells to generate a depth profile as shown in b and d. The y-axis scale is different for b and d. e Depths of furrows between cells from biofilms cultured in the absence (−, n = 10 from three AFM images) and presence (+, n = 10 from three AFM images) of DNase I. Error bars represent standard deviations. ^***P < 0.001