Fig. 4.

Fig. 4. Inhibition of biofilm by S. mutans KCTC treated with cell-free supernatant (CFS) of L. plantarum Ln4 visualized by confocal laser scanning microscopy (CLSM) (× 50 magnification). (A) Control group (0% treatment); (B) treated with L. rhamnosus GG (12.5% treatment); (C) treated with L. plantarum NK181 (6.25% treatment); (D) treated with L. plantarum Ln4 (12.5% treatment).

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