FIGURE 1.

Schematic of experimental setup used. Small groups of islets were placed on the bottom of a small (1 ml) experimental chamber and islet fura-2 fluorescence was collected at 510 nm after alternate excitation at 340/380 nm. Saline was flowed through the bath at 1 ml/min. (Inset) Five islets loaded with fura-2 excited at 340 nm.