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Confocal laser scanning microscopy images of Streptococcus pyogenes biofilms. (a) Untreated control; (b) treatment with live cells of Weissella cibaria CMU (oraCMU); (c) treatment with live cells of W. cibaria CMS1 (oraCMS1); (d) treatment with a cell-free supernatant (CFS) of oraCMU; (e) treatment with a CFS of oraCMS1. Green, live cells; red, dead cells (magnification, 40×).
