Figure 4.
Fluorescent microscopic detection of L. fermenti labeled with cFDA-SE. A: 2 h, a diffusely distributed cFDA-SE labeled bacteria under fluorescent microscopy; B: 4 h, slightly reduced in comparison with 2 h; C: 8 h, cFDA-SE labeled bacteria reduced obviously; D: Blank control group, no cFDA-SE labeled bacteria was detected.