Figure 1.
Schematic picture of the experimental setup. (A) Cultured cells were mounted in a chamber on the microscope stage. The tapered outlet end of the capillary was positioned close to a fluorescent cell with the help of a micromanipulator. The inlet end of the capillary was placed in a buffer-filled vial. The setup was connected to a high voltage power supply. (B) Single pulse of varying pulse durations (50 ms −300 ms) were applied at 500 V. This resulted in the release of fluorescent thiols from the cell interior.