Fig. 3.

Fig. 3. Streptococcus mutans KCTC 5458 biofilm on glass coupons surface treatment with cell-free supernatant (CFS) of Lactobacillus brevis KCCM 202399 visualized by scanning electron microscopy (SEM) images (magnification: × 1,000, × 5,000, and × 10,000). A group: control group (untreated with L. brevis CFS); B group: treated with L. rhamnosus GG CFS; C group: treated with L. brevis KCCM 202399 CFS.

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