Fig. S5.

Estimate of the number of gap junction channels coupling each pair of nonsensory cells. The number of cells involved in the propagation of Ca²⁺ signals after photolytic release of IP₃ (see text for details) is plotted as a function of the number N_ch of gap junction channels coupling each pair of nonsensory cells. The straight line through the model data points is a fit with function f (x) = A log(x/B), where A = 6.31 and B = 47.08. The red dashed line indicates the average number of cells invaded by the Ca²⁺ signal computed from experiments.