Figure 4
The effect of Au/CuS NPs pre-treatment on B. anthracis cells. (A) The percentages of surviving B. anthracis cells upon the treatment with Au/CuS NPs at 0.083 μM, 0.83 μM, and 4.15 μM and treatment duration varying from 0.5 h to 3 h. Initial cell concentration: 1.6 ×107 cells/mL in DI water. (B) The fluorescence images of the control B. anthracis cells and cells interacted with Au/CuS NPs in DI water for ~25 min, ~35 min and ~45 min. Cells were stained with the Live/dead BacLight bacteria staining kit, live cell in green, and dead cells in red.