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Fig. 2 | Gut Pathogens

Fig. 2

From: Capsular polysaccharide inhibits adhesion of Bifidobacterium longum 105-A to enterocyte-like Caco-2 cells and phagocytosis by macrophages

Fig. 2

Light microscope images of B. longum 105-A and ∆cpsD mutant. India ink staining, the polysaccharide capsule appears as a clear halo around the microorganism in the wild-type B. longum 105-A (a), while this layer not present in its ∆cpsD mutant (b). TEM images with negative staining. Wild-type expressing ca. 0.2-µm-thick CPS layer (c, and white arrow), while the mutant did not possess the CPS but expressing long and dense fimbriae (d, and black arrow). White bars 0.2 µm

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