FIG. 1.
Agglutination of Saccharomyces cerevisiae mediated by mannose-specific adhering lactobacilli (4× diluted), as visualized by bright-light microscopy (magnification, ×200). (A) S. cerevisiae with no bacterial cells added did not agglutinate. (B) The wild-type strain L. plantarum WCFS1 induced agglutination of S. cerevisiae (see arrows). (C) L. plantarum ATCC 8014 did not cause agglutination of S. cerevisiae.