Figure 3.

Biofilm eradication potential of 4 Astragalus angulosus extracts against a preformed Staphylococcus epidermidis biofilm assessed by spectrophotometric method. Results are displayed as mean biofilms plus standard error of the mean. ^•P<0.05, ^••P<0.01, ^•••P<0.001, ^••••P<0.0001 (analysis of variance by Kruskal-Wallis test). *P<0.05, **P<0.01, ***P<0.001 (Dunn’s post-test comparing the mean biofilm for each category (extract concentration) with that of the untreated control, OD490: Optical density at 490 nm