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. 2019 Dec 12;10:2810. doi: 10.3389/fmicb.2019.02810

FIGURE 3.

FIGURE 3

Adhesion and invasion of Proteus mirabilis C02011 strain, P. mirabilis B02005, and P. mirabilis American Type Culture Collection (ATCC) 29906 strains to Caco-2 cells. (A) Caco-2 cells were infected with P. mirabilis C02011, P. mirabilis B02005, and P. mirabilis ATCC 29906 strains for 2 h. The adhesion abilities of different strains were recorded. (B) Caco-2 cells were infected with P. mirabilis C02011, P. mirabilis B02005, and P. mirabilis ATCC 29906 for 2 h, followed by treatment with gentamicin (200 μg/ml) for 2 h. The invasion abilities of different strains were recorded. (C–E) Transmission electron microscopy (TEM) images were collected for observation. (C) Morphological observation of P. mirabilis C02011 (×15,000 magnification). (D) Morphological observation of uninfected Caco-2 cell (×7,000 magnification). (E) Morphological observation of Caco-2 cell infected with P. mirabilis C02011 (×7,000 magnification). ∗∗P < 0.01.