Subsequently, we identified a series of cell-type-specific expressed novel marker genes, including TCHH, CXCL14, KRT35, GSG1, CRISP2, LOC102177231, LOC102176685, LOC102184223, LOC102177855, and LOC102178129, which provided valuable information to distinguish HF cell types of other species. This evidence concerns the gene GSG1 and hydrops fetalis.