Figure 2. Determination of whether the dorsal proliferation “hot spot” is the ventricle site for HVC progenitors.

A: The dorsal “hot spot” is electrically injured. B–E: No significant difference is detected in the HVC volume between the lesioned and intact hemispheres. The boxed areas in A and B are magnified in C and D, respectively. Scale bar = 1 mm (A, B), 500 µm (insert in A) and 200 µm (C, D).