To assess the effects of follicular cells in vivo, our previous studies had successfully established the autoimmune hepatitis model of EAH mice (Figure 5A, 5).5, 6 Considering that GITR by TFR cells has enabled sorting strategies to highly purify TFH and TFR cells,16 we further analysed the percentages of CD4+CXCR5+GITR+TFR and CD4+CXCR5+GITR‐TFH cells in EAH mice (Figure 5C). The gene discussed is TNFRSF18; the disease is autoimmune hepatitis.