(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 6. Spontaneous oscillations of the basolateral membrane voltage
(Vbl) in an isolated Malpighian tubule of Aedes
aegypti. Three principal cells were impaled with conventional
microelectrodes. The remaining epithelial cells (more than 120) are not shown
in the tubule diagram. Note that cell 2 separates cell 1 (red trace) from
cells 3 (blue trace) and 4 (green trace) from which voltages are recorded.