Fig. 2
From: Potential of two delivery systems for nisin topical application to dental plaque biofilms in dogs
Antimicrobial activity of a supplemented veterinary toothpaste determined by an agar-well diffusion assay. a A non-susceptible isolate (E. faecalis M29c). b A susceptible isolate (E. faecalis ATCC® 29,212), increasing nisin concentrations in which produced increasing inhibition zone diameters (1-non-supplemented toothpaste; 2- supplemented toothpaste at 1.25 μg/mL; 3- supplemented toothpaste at 2.5 μg/mL; 4- supplemented toothpaste at 5 μg/mL; 5- supplemented toothpaste at 12.5 μg/mL; 6- supplemented toothpaste at 25 μg/mL)