TFRC and hydrops fetalis: Next, we further analyzed the changes of TFRC expression in different cell types at different stages of HF using the published single‐cell RNA‐seq data of TAC‐model mouse heart tissue (GSE120064),20 and found that TFRC expressions were significantly increased in the CM (cardiomyocytes), GN (neutrophils), and MP (macrophages) of heart tissue 2 weeks after TAC surgery (Figure 4A).