Figure 2.

Partially paint-filled mouse membranous labyrinths at 16.5 dpc. At 16.5 dpc, the membranous labyrinth largely consists of two compartments. (A) Latex paint solution injected into the endolymphatic sac fills the endolymphatic duct, saccule, and cochlea only. (B) Latex paint solution injected into the lateral ampulla fills the utricle, the three semicircular canals, and their ampullae. cc, common crus. Orientation as per Fig. 1. (Scale bar = 200 μm.)