As shown in Figures 3B and C, the co-infection induced strong expression of HSV1-tk-mCherry in SLC45A2-AMACR-positive HEPG2 and HUH7 cells, with 98.7 and 95.1% of HEPG2 and HUH7 cells being positive for HSV1-tk-mCherry, respectively. The gene discussed is TKT; the disease is coinfection.