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. 2021 Mar 26;11:602833. doi: 10.3389/fcimb.2021.602833

Figure 4.

Figure 4

Biofilm formation tests in the presence of extracellular matrix (ECM)-degrading agents. Biofilm formation was measured by crystal violet staining assay. (A) The effect of DNase I and proteinase K on biofilm formation in the absence of plasma. (B) The effect of DNase I and proteinase K on biofilm formation in the presence of plasma. Three wells were used for each strain per experiment, and the experiment was conducted twice. Data from the total of six experiments were compared between strains. TSBG, tryptic soy broth containing 0.5% glucose; Control, biofilm without treatment.