Fig. 3. Immunocytochemical staining with anti-Salmonella-flagellin primary antibody of the recombinant B. longum with gltA–fliC gene, and the parental B. longum without
gltA–fliC. Bright-field images of the recombinant B. longum (a) and the parental B. longum (b), and immunofluoroscence images of the recombinant B. longum (c) and the
parental B. longum (d).