Figure 7.

Comparisons of time course of FM1-43 dye loading at the midsection of the abneural segment of the chick basilar papillas at E12, E14, E16, E18, and E21. A, Images were captured at three focal planes at the levels (▴, L₁; •, L₂; ▪, L₃) of the hair bundle, the cuticular plate, and the basal pole. The interval between frames was 1.6 sec. B, The changes in fluorescence have been fitted with exponential function. The τ values (in seconds) at E12 for L₁, L₂, and L₃ were 2.8, 7.5, and 10.6; at E14, 3.2, 4.2, and 6.5; at E16, 2.1, 5.2, and 5.6; at E18, 9.1, 18.8, and 21; and at E21, 15.1, 11.8, and 19.4, respectively (number of preparations at each embryonic stage, n = 11).