178921.fig.004a
(a)
178921.fig.004b
(b)
178921.fig.004c
(c)
178921.fig.004d
(d)
178921.fig.004e
(e)
178921.fig.004f
(f)
Figure 4: Fluorescence microscope images of bacteria stained with CTC after 2 h (a–c) and 4 h (d–f) of culture on NT, NTS, and TiS.