FIG. 3.

Nasal infection-preoptic area infiltration. (A) Cellular debris showing GFP label of the preoptic area in the single animal showing viral dispersion outside the olfactory system. Only the left side of the brain shows VSV infection of the preoptic area. In this section, no infection of the ependymal cells that line the ventricle is detected. (B) DIC image of the same field shown in panel A. (C) In a caudoventral direction in the preoptic area, GFP-labeled cells are seen at the top of the micrograph, and reddish cells indicative of degenerated cells are seen more ventrally. Scale bar, 30 μm.