FIG. 1.

BDV antigen distribution in the hippocampi of infected rats and mice. Animals were inoculated intracerebrally with recombinant virus originating directly from either Vero cells, rat brain (10 μl of 10% extract), or mouse brains (10 μl of 10% extract). Animals were killed at 6 to 8 weeks postinfection or when severe neurological symptoms appeared. Brain sections were stained with a BDV-N-specific antibody. The brown stain indicates BDV-infected cells.