Figure 2: The intracellular distribution of probes 1, 2 and 4 in live BSC-1 cells.

Confocal microscopy images of live BSC-1 cells after incubation with (a) FITC-labelled probe 1 (15 μM) for 5, 10, 15 and 30 min, (b) RhB-labelled probe 2 (15 μM) for 30 min and (c) probe 4 (15 μM) for 30 min. Scale bars, 10 μm.