Fig. 4From: Recombinant L. lactis vaccine LL-plSAM-WAE targeting four virulence factors provides mucosal immunity against H. pylori infectionM cell-targeting detection. Red signal indicates fluorescent secondary antibody-labeled recombinant protein SAM-WAE, green signal indicates FITC-labeled M cells, and blue signal indicates DAPI labeled nuclei. White arrows indicate the co-localization signals for antigens that were directed toward M cellsBack to article page