Summary of LY flux data versus junctional conductance for Cx43, Cx26, and Cx40 cell pairs. Each data point for Cx26 (▾) represents a recipient cell fluorescence intensity over injected cell fluorescence intensity 12 min after LY injection (Valiunas et al., 2002). The solid lines correspond to the first order regressions and the dashed lines represent confidence intervals (95%) for each plot. See text for references on derivation of regression lines for Cx40 and Cx43.