Fig. 3

Effects of the ΔclpP mutant on E. faecalis biofilm formation and eDNA release. a The biofilms of E. faecalis strains were stained with crystal violet, and OD₅₇₀ values were measured. *P < 0.05, **P < 0.01, ***P < 0.001 (Student’s t test). b PI-bound eDNA of E. faecalis strains was measured by a Varioskan™ LUX multimode microplate reader. Three independent experiments were performed, and the data represent means ± SD