We observed similar effects of AHCC-treatment on γδ T cell expansion in the spleens (Figure 3D) and lungs (Figure 3E,F) of K18-hACE2 mice prior to and after infection, except no difference in the percentage of γδ T cells in the lungs was observed between the control and AHCC-treated groups prior to infection (Figure 3E). Here, KRT18 is linked to infection.