Fig. 6.

Mutant SFV VLP enters BHK21 cells and neurons in vitro and neurons in vivo with different infection efficiency. A Three mice were tested and 15 sections were analyzed to determine the infection efficiency of the mutant virus on neurons in vivo. B Differences in infection efficiency of the mutant virus in different cells (n = 3; **P < 0.01, one-way ANOVA; error bars indicate standard error of the mean from the three independent experiments). C Models of mutant virus infection of BHK21 cells, neurons in vitro, and neurons in vivo.