We injected EnvA-RVΔG-mCherry into the OB of adult Tg[gad1b:Gal4; UAS:TVA-mCherry] fish and detected infection in a subset of neurons by the strong cytoplasmic and nuclear expression of mCherry, which could easily be distinguished from the weak, membrane-associated background expression of TVA-mCherry (Figure 3C). This evidence concerns the gene LGALS4 and infection.