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. 2018 Jun 26;8:9691. doi: 10.1038/s41598-018-28009-5

Figure 4.

Figure 4

Yield stress of P. aeruginosa colony-biofilms. Stress sweeps were performed on WT, RSCV and mucoid colony biofilms at 2-, 4- and 6-d by incrementing the stress from 0.01–100 Pa (Supplementary Fig. S1). The yield stress (σy) was taken to be the point of viscoelastic crossover where the storage modulus (G′) and the loss modulus (G″) intersected in Supplementary Fig. S1. Data presented as mean ± SD, n = 4. Black * indicates comparisons depicted by the line. Coloured * indicates comparisons to 2-d of the given biofilm. *p-value < 0.05, **p-value < 0.01, ***p-value < 0.001.